Updated on 2026/07/29

写真a

 
IKEDA TAKASHI
 
Organization
Undergraduate School School of Agriculture Professor
Title
Professor
Homepage
https://www.isc.meiji.ac.jp/~agrisys/
Other name(s)
Ikeda Takashi
External link

Degree

  • 博士（農学） ( 1996.3   愛媛大学 )

Research Areas

  • Environmental science/Agricultural science / Biological resource conservation

Professional Memberships

Papers

  • Effects of Water Deficit and Far-red Radiation on Yield and Aroma of ‘Tochiotome’ Strawberry during Fruit Development in Growth Chambers Reviewed

    Junjira Satitmunnaithum, Taro Iwami, Ami Tateishi, Kurumi Tanaka, Takashi Ikeda

    HortScience   61 ( 8 )   1674 - 1685   2026.8

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Society for Horticultural Science  

    Optimizing fruit quality is a key objective in controlled-environment agriculture for high-value crops, including strawberries. Fruit quality is largely determined by sweetness and aroma, both of which are strongly influenced by environmental conditions during fruit development, particularly water availability and light quality. However, the interactive effects of water deficit and far-red (FR) radiation on fruit yield and aroma composition remain insufficiently understood. We investigated the individual and combined effects of water deficit and FR radiation on ‘Tochiotome’ strawberry fruit development in a controlled growth chamber over a 3-year period. Treatments included water deficit alone, FR radiation alone, and their combined application. Fruit fresh weight, soluble sugar content, and volatile aroma compounds were analyzed using gas chromatography–mass spectrometry. Reduced irrigation levels decreased soil water potential significantly, confirming the induction of water deficit in strawberry plants. Water deficit resulted in a pronounced, threshold-dependent reduction in fruit fresh weight, accompanied by an increase in soluble sugar content. FR radiation alone had a comparatively minor effect on yield, but contributed to increased sugar accumulation, particularly under combined conditions. Notably, the combination of FR radiation and moderate water deficit reduced fruit weight significantly. Aroma analysis revealed that strawberry volatile profiles were dominated by esters and terpenoids, with (E)-2-hexenyl acetate, hexyl acetate, (E)-nerolidol, and linalool consistently identified as major components. Water deficit primarily induced quantitative changes and stress-related shifts in volatile composition, whereas FR radiation influenced metabolic pathway allocation, promoting terpenoid synthesis. Under combined treatments, water availability emerged as the dominant factor shaping aroma profiles, whereas FR radiation acted as a modulatory factor. Overall, water deficit was the primary determinant of fruit quality, whereas FR radiation played a secondary, modulatory role. These findings provide a basis for optimizing irrigation and light conditions to improve yield, sweetness, and aroma in controlled-environment strawberry production.

    DOI： 10.21273/hortsci19517-26

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    Other Link： https://journals.ashs.org/downloadpdf/journals/hortsci/61/8/article-p1674.xml

  • Night Blue-light Radiation Enhances Anthocyanin Production in Purple Paprika ‘Tequila’ by Increasing Its Structural-gene Expression during Fruit Growth Reviewed

    Junjira Satitmunnaithum, Itsuki Abe, Ryuhei Mitsuzuka, Teruno Onozawa, Takashi Ikeda

    J. Amer. Soc. Hort. Sci.   149 ( 5 )   294 - 301   2024.9

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    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：American Society for Horticultural Science  

    Purple paprika ( Capsicum annuum ) is a vegetable with potential economic value; however, enhancing and maintaining the purple fruit color is challenging. We investigated the effects of night blue-light supplementation on fruit growth, anthocyanin content, and gene expression in purple paprika. During two duplicated experiments conducted in spring and autumn, purple paprika plants were subjected to blue-light supplementation at night. Ten days after fruits were pollinated, night blue light with photosynthetic photon flux density (PPFD) of 80 to 100 µmol·s <sup>−1</sup> ·m <sup>−2</sup> was supplied from 1800 HR to 0500 HR (11 hours). Fruit samples were harvested 15, 20, and 40 days after pollination from control (no-light treatment) and blue light–treated fruits. The fruit size, fresh weight, anthocyanin content, and expression levels of anthocyanin biosynthesis-related genes ( HY5 , bHLH , WDR , MYB , PAL , CHS , F3H , DFR , ANS , and UFGT ) were determined. Blue-light supplementation increased the anthocyanin-related gene expressions in the fruit peel, enhancing anthocyanin synthesis and accumulation. However, there were no significant differences between the growth of control and blue light–treated fruits. These findings highlight the potential of night blue-light supplementation to enhance anthocyanin content in purple paprika fruits without affecting overall fruit growth.

    DOI： 10.21273/jashs05421-24

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    Other Link： https://journals.ashs.org/downloadpdf/journals/jashs/149/5/article-p294.xml

  • Determining longitudinal- and shear-wave velocities in Japanese radish, watermelon and potato. Reviewed

    2024.3

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  • Active Sugar Accumulation and Water Status of Watermelon Fruit Grown under Different Nutrient Concentrations in Hydroponic Culture Reviewed

    Sentaro Tomiyama, Hiroshi Yakushiji, Masako Osawa, Kenta Yanagida, Nana Sato, Yusuke Matsumoto, Takashi Ikeda

    HortScience   58 ( 5 )   488 - 494   2023.5

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    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：American Society for Horticultural Science  

    We investigated sugar (solute) accumulation in watermelon [ Citrullus lanatus (Thunb.) Matsum. et Nakai] fruits at the immature stage. Watermelon plants were grown hydroponically in a nutrient solution with an electric conductivity (EC) of 1.2 S⋅m <sup>−1</sup> (EC 1.2 regime); then, fruits were harvested 21 days after anthesis. The flesh of each fruit was divided into seven different parts to measure the sugar concentration and water status. The results indicated that the sugar concentration was higher in the center of the fruit flesh than in the other parts, such as around the pericarp. Moreover, the lowest osmotic potential was observed in the center of the fruit flesh, indicating solute accumulation. Concurrently, when the transport of photosynthates in the fruit was investigated using the <sup>13</sup> CO <sub>2</sub> isotope, the active solute accumulation in the center of the fruit flesh was observed, supporting the observed sugar accumulation in this part. Consequently, this active solute accumulation and distribution occurred in the center of the watermelon fruit, as demonstrated by the data of osmotic pressure and sugar concentration and supported by the observed active photosynthate accumulation. Additionally, we investigated these measurements by increasing the nutrient solution concentration 14 days after anthesis. As a result, fruit growth was slightly inhibited using the EC 3.0 regime, and <sup>13</sup> C translocation was also inhibited in the fruit, especially in its center. Even though the sugar concentration and osmotic pressure of the fruit flesh were not clearly affected by high nutrient solution concentrations, the cell turgor of the central flesh of the fruit grown using the EC 2.0 and 3.0 regimes was lower than that of the fruit grown using the EC 1.2 regime. Treatments with higher nutrient concentrations might have negative effects on immature watermelon fruits.

    DOI： 10.21273/hortsci17026-22

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    Other Link： https://journals.ashs.org/downloadpdf/journals/hortsci/58/5/article-p488.xml

  • Firmness evaluation of watermelon and melon using velocity dispersion of surface acoustic wave. Reviewed

    2022.8

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  • Anthocyanin Production and Enzymatic Degradation during the Development of Dark Purple and Lilac Paprika Fruit Reviewed

    Yuji Yamada, Masayoshi Nakayama, Hiromitsu Shibata, Sanae Kishimoto, Takashi Ikeda

    Journal of the American Society for Horticultural Science   144 ( 5 )   329 - 338   2019.9

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    During development, the fruit of some paprika ( Capsicum annuum L.) cultivars shows a change in color from green to dark purple (e.g., ‘Mavras’) or lilac (e.g., ‘Tequila’). However, this purple coloration is rare among paprika cultivars and disappears in ripened fruit, which are red. Therefore, we investigated the mechanism causing this color change in the cultivars Mavras and Tequila to better understand how purple ripened fruit could be generated. High-performance liquid chromatography (HPLC) analyses of the anthocyanin contents of the fruit indicated that anthocyanin was undetectable in green fruit, accumulated in dark purple or lilac ones, and then decreased again in red ones in both cultivars. Furthermore, expressions of most of the analyzed anthocyanin biosynthesis–related genes and genes for their transcription factors increased in dark purple or lilac fruit and decreased in red ones, i.e., it was synchronized with the changes in anthocyanin contents. Furthermore, anthocyanin degradation activity as a result of peroxidases was detected at all stages but increased when the lilac or dark purple color started to fade. Thus, the development of purple coloration is caused by increased anthocyanin biosynthesis, whereas the fading of this coloration is a result of both a decrease in anthocyanin biosynthesis and an increase in anthocyanin degradation. At the ripening stage, the green pigment (chlorophyll) contents decreased, whereas the red pigment (carotenoid, particularly capsanthin) contents increased. However, these timings did not completely coincide with the timing of anthocyanin degradation, suggesting that the content of each pigment is individually regulated, and so purple, green, and red coloration could be freely expressed in mature paprika fruit.

    DOI： 10.21273/jashs04727-19

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    Other Link： https://journals.ashs.org/downloadpdf/journals/jashs/144/5/article-p329.xml

  • No Effect of Seed Presence or Absence on Sugar Content and Water Status of Seeded and Seedless Watermelon Fruits Reviewed

    Sachiko Kawamura, Kyoko Ida, Masako Osawa, Takashi Ikeda

    HortScience   53 ( 3 )   304 - 312   2018.3

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    We investigated physiological differences in watermelon [ Citrullus lanatus (Thunb.) Matsum. et Nakai] fruits among seeded diploid and seedless triploid fruits, N-(2-chloro-4-pyridyl)-N′-phenylurea (CPPU)–treated seedless fruits, and soft-X–irradiated pollen-pollinated seedless fruits to investigate the effect of the presence or absence of seeds on water relations and sugar content. We picked fruits at 20 and 40 days after anthesis and sampled flesh at the center, around the seeds, and near the pericarp to measure water status and sugar content. There were no significant differences between seeded and seedless cultivars in sugar contents or in water and osmotic potentials of the flesh, although the latter two were decreased at 40 days. CPPU and soft-X–irradiated pollen eliminated mature seeds, but there were again no significant differences in sugar contents or water status between seeded and seedless fruits. Thus, the presence or absence of seeds did not influence the sugar content or osmotic pressure in watermelon fruit, so sugar accumulation was not related to seeds.

    DOI： 10.21273/hortsci12707-17

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    Other Link： https://journals.ashs.org/downloadpdf/journals/hortsci/53/3/article-p304.xml

  • Differential Anthocyanin Concentrations and Expression of Anthocyanin Biosynthesis Genes in Strawberry ‘Sachinoka’ during Fruit Ripening under High-temperature Stress Reviewed

    Keisuke OKUTSU, Kohei MATSUSHITA, Takashi IKEDA

    Environment Control in Biology   56 ( 1 )   1 - 6   2018

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    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    DOI： 10.2525/ecb.56.1

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  • The Effect of High Air Temperature on Anthocyanin Concentration and the Expressions of Its Biosynthetic Genes in Strawberry &amp;lsquo;Sachinoka&amp;rsquo; Reviewed

    Kohei MATSUSHITA, akumi SAKAYORI, Takashi IKEDA

    Environment Control in Biology   54 ( 2 )   101 - 107   2016

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    Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    DOI： 10.2525/ecb.54.101

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  • Firmness evaluation of watermelon flesh by using surface elastic waves Reviewed

    Takashi Ikeda, Pak-Kon Choi, Toshio Ishii, Ikko Arai, Masako Osawa

    Journal of Food Engineering   160   28 - 33   2015.9

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.jfoodeng.2015.03.020

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  • 植物工場環境条件下における液肥への糖および塩添加が赤色系リーフレタスの発色に及ぼす影響 Reviewed

    高田千奈美・池田敬

    11   49 - 57   2015.5

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：植物環境工学  

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  • Differences in root growth and permeability in the grafted combinations of Dutch tomato varieties (Starbuck and Maxifort) and Japanese varieties (Reiyo, Receive and Magnet) Reviewed International journal

    Kakita T, Abe A, Ikeda T

    6   2640 - 2650   2015.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Journal of Plant Science  

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  • The Effect of Adding Sugar and Salt to Hydroponic Solution for Coloring of Red Leaf Lettuce under Plant Factory Condition

    TAKATA Chinami, IKEDA Takashi

    Shokubutsu Kojo Gakkaishi   27 ( 1 )   33 - 40   2015

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    Language：Japanese   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    We investigated the effect of sugar and salt application to hydroponic culture solution for coloring red-leaf lettuce (<I>Lactuca sativa</I> L. 'Prunai' and 'Rouxai') under controlled culture conditions. In plant factories condition, red-leaf lettuce varieties frequently do not turn red. In order to solve this, we tested various stress conditions. Stresses were induced by addition of polyethylene glycol, sugar and salt to hydroponic culture solution, and using concentrated nutrient solution. The result showed that the combination of adding sugar and salt (5 and 0.02 % respectively in the nutrient solution at EC 0.6dSm<SUP>-1</SUP>) accerelated coloring of red-leaf lettuce varieties. This technique might be efficient for growing red-leaf lettuce cultivation in plant factories.

    DOI： 10.2525/shita.27.33

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    Other Link： http://agriknowledge.affrc.go.jp/RN/2010891305

  • Hydraulic properties in tissue-cultured soybean roots affected by salt, sugar and heavy metals. Reviewed

    Ikeda T, Nonami H

    46   215 - 222   2013.9

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  • Measuring the water status of watermelon fruits by psychrometer and 1H nuclear magnetic resonance imaging. Reviewed

    Yoshii K, Fukuoka M, Kawamura T, Ikeda T

    Environmental Control in Biology   51   113 - 120   2013.5

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  • Diagnostic imaging of watermelon fruit by 1H-NMR. Acta Horticulturae International journal

    Yoshii K, Fukuoka M, Matsunaga K, Ikeda T

    936   373 - 377   2012.9

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  • The effects of high temperature and water stress on fruit growth and anthocyanin contents of pot-grown strawberry (Fragaria x ananassa Duch. cv. Sachinoka) plants Reviewed

    Ikeda T, Suzuki N, Nakayama M, Kawakami Y

    Environment Control in Biology   49   201-215   2011.12

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  • Root vegetable production under hybrid electrode fluorescent lamp (HEFL) International journal

    Harada S, Yumoto K, Ikeda T

    Acta Horticulturae   907   137-140   2011.9

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  • Osmotic contribution of sugar contents in watermelon flesh Reviewed

    Ikeda T, Fukazawa T, Mitsuie S, Yoshii K

    Environment Control in Biology   49   83-90   2011.6

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  • Permeability of root cells of Dutch Dundee and Japanese Reiyo varieties of tomato seedlings to hydroponic solution and potassium ions Reviewed

    Furukawa T, Ishikawa K, Onuki S, Mukai K, Ikeda

    Journal of the Japanese Society for Horticultural Science   79   287-293   2010.7

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  • Effect of high temperature on fruit quality of pot-grown strawberry plants International journal

    Ikeda T, Yamazaki T, Kumakura H, Hamamoto H

    Acta Horticulturae   842   679-682   2009.8

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  • Growth and water status of tissue-cultured strawberry plants as affected by salt stress and different sugar concentration in medium International journal

    Okawai Y, Ikeda T, Taji A

    Acta Horticulturae   829   417-412 - 421   2009.6

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  • Effects of various sucrose concentration and ancymidol on shoot elongation and water status of asparagus in vitro Reviewed

    Acta Horticulturae   829   299 - 303   2009

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (international conference proceedings)  

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  • Improvement of human thermal comfort in greenhouses with insect-proof screens

    Shimazu T., Hamamoto H, Okada T, Ikeda T, Tanaka K

    Acta Horticulturae   797   193-198   2008.9

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  • Growth of spinach under artificial lighting after night-break treatment at intervals of several days

    Hamamoto H, Yamazaki K, Ikeda T

    Acta Horticulturae   761   203-206   2007.9

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  • A no electricity hydroponic culture system for fruit vegetables. International journal

    Ikeda T, Hamamoto H, Yamazaki T, Tanaka K

    Acta Horticulturae   742 ( 742 )   95-97 - 97   2007.4

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  • Effect of Cooling of Medium on Fruit Set in High-bench Strawberry Culture Reviewed

    Takashi Ikeda, Keisuke Yamazaki, Hiroshi Kumakura, Hiroshi Hamamoto

    HortScience   42 ( 1 )   88 - 90   2007.2

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：American Society for Horticultural Science  

    We demonstrated the effect of cooling of the medium on the fruit set of strawberries ( Fragaria × ananassa Duch.) grown on high benches for forcing culture. The cooling by water evaporation promoted by a fan enabled to cool the medium by an average of several degrees compared with no cooling. When runner plants were transplanted in late summer, cooling accelerated flower bud emergence almost 10 days on the primary axillary branch compared with plants grown in uncooled medium. Also, with cooling, fruit was harvested from the inflorescence of the primary axillary branch almost 10 days earlier. We expect that this technique will allow early transplanting around the end of summer and will shorten the time between fruit set on the terminal inflorescence and that on the inflorescence of the primary axillary branch.

    DOI： 10.21273/hortsci.42.1.88

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    Other Link： https://journals.ashs.org/downloadpdf/journals/hortsci/42/1/article-p88.xml

  • Water relations in tissue-cultured soybean plants

    Takashi Ikeda, Hiroshi Nonami, Katsu Imai

    Environmental Control in Biology   45 ( 4 )   215 - 222   2007

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    Language：English   Publisher：Biotron Institute  

    DOI： 10.2525/ecb.45.215

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  • Using latent heat of water evaporation to cool culture medium for high-bench strawberry culture.

    Ikeda T, Kumakura H, Hamamoto H, Fujiwara T, Shimazu T

    Acta Horticulturae   708 ( 708 )   393-396 - 396   2006.5

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  • キャベツおよびブロッコリーの肥料制限苗における定植前水分状態ならびにアブシジン酸含量について Reviewed

    池田 敬, 浜本 浩, 村井恒治, 薬師寺 博, 山﨑敬亮

    近畿中国四国農業研究   9   36 - 39   2006

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  • 1〜2日間隔の暗期中断処理を行ったホウレンソウの生育に対する光照射時間の影響

    浜本浩・池田敬・山崎敬亮

    近畿中国四国農業研究   7 ( 7 )   47-49   2005.9

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  • 冬季寡日照中山間地におけるイチゴ3品種の収量パターンと暗黒低温処理の効果

    熊倉裕史・藤原隆広・池田敬

    近畿中国四国農業研究   6   42-49   2005.3

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  • Microclimate and human thermal comfort in pipe greenhouses with insect-proof screens for vegetable cultivation reducing the use of chemical pesticides.

    Shimazu T, Hamamoto H, Okada T, Ikeda T, Tanaka K

    Journal of Agricultural Meteorology   60   813-816   2005.2

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  • 人工気象室における数日間隔での日長延長処理がホウレンソウの生育に及ぼす影響

    浜本浩・池田敬・嶋津光鑑

    植物工場学会誌   16   80-84   2004.6

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  • 週3回の電照と寒締め処理がホウレンソウの生育に与える影響

    浜本浩・池田敬・嶋津光鑑

    日本農業気象学会東海支部誌   62   23-26   2004.3

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  • Water Status and Growth of Callus in Sturt's Desert Pea (Swainsona formosa) as Affected by Media Condition

    IKEDA Takashi, TAJI Acram, FUJIME Yukihiro, NOGUCHI Masaki

    Environmental Control in Biology   42 ( 3 )   177 - 183   2004

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    This work was undertaken to investigate response of callus and the water status of Sturt's desert pea (<I>Swainsona formosa</I>) in vitro under various environmental stress conditions. Water potential of culture media ranged from -0.27MPa to -1.05MPa so that salt and osmotic stress and different concentration of sucrose could be applied to Sturt's desert pea calli grown in the tissue culture media. The percent increase in calli was highest in standard MS medium with 30g L<SUP>-1</SUP> sucrose but was not so when the water potential of medium was adjusted to the same water potential using standard MS plus mannitol. The water potential of callus tissue was almost the same as that of culture media at any range of MS and sucrose concentrations. Turgor of callus tissue did not alter significantly under any stress conditions. It is concluded that the optimum concentration of salt, sucrose and water status of medium could be estimated by this method and that standard MS concentration and its water status are suitable for the formation of Sturt's desert pea calli.

    DOI： 10.2525/ecb1963.42.177

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  • Effects of Light Break Treatment Every Second or Third Night on the Growth of Certain Leaf Vegetables

    Hamamoto Hiroshi, Shimazu Teruaki, Ikeda Takashi

    Hort. Res. (Japan)   2 ( 4 )   307-310 - 310   2003.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE  

    Effects of light break treatment every second or third night on the growth of certain leaf vegetables were evaluated. In experiment 1, spinach (<i>Spinacia oleracea</i>) was irradiated with 0.4~1.2 μmol·m<sup>−</sup><sup>2</sup>·s<sup>−</sup><sup>1</sup> (PPF) of light from an incandescent lamp for 51 minutes a mid-night every night (every night treatment), or for two hours at mid-night on Monday, Wednesday and Friday (interval treatment). In experiments 2, spinach and tsukena (<i>Brassica campestris</i>) received interval treatment with 1.0-1.5 μmol·m<sup>−</sup><sup>2</sup>·s<sup>−</sup><sup>1</sup> of light of incandescent lamp for two hours at mid-night. In experiment 3, spinach, lettuce (<i>Lactuca sativa</i>) and tsukena received interval treatment with 0.5-1.8 μmol· m<sup>−</sup><sup>2</sup>·s<sup>−</sup><sup>1</sup> of light from light emitting diodes (LEDs) for two hours at mid-night.<br> In experiment 1, under interval treatment, there was no bolting of spinach on the 26<sup>th</sup> day of treatment. However, ratio of bolting plants was 22 % under every night treatment. In experiments 2 and 3, interval treatment with incandescent lamp or LED promoted spinach growth without bolting. In spinach, plant height, number of leaves and top dry weight were larger under interval light break treatment than under no light break. However, the growth of lettuce and tsukena were not promoted with light break treatment.<br>

    DOI： 10.2503/hrj.2.307

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  • 形状記憶合金コイルバネによるトンネル換気の自動化

    嶋津光鑑・浜本浩・池田敬

    生物環境調節   41   157-164   2003.12

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  • Control of Fruit Quality by Salinity Stress at Various Fruit Development Stages of Single-Truss Tomato Grown in Hydroponics

    OKANO Kunio, NAKANO Yuka, WATANABE Shin-ichi, IKEDA Takashi

    Environment control in biology   40 ( 4 )   375-382 - 382   2002.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：日本生物環境調節学会  

    DOI： 10.2525/ecb1963.40.375

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  • Water Status of Garlic Callus under Various Salt and Osmotic Stress Conditions Reviewed

    Takashi Ikeda, Yukihiro Fujime, Satoshi Terabayashi, Shuichi Date

    HortScience   37 ( 2 )   404 - 405   2002.4

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)  

    DOI： 10.21273/hortsci.37.2.404

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    Other Link： https://journals.ashs.org/downloadpdf/journals/hortsci/37/2/article-p404.xml

  • Effects of explant source and plant growth regulators on organ formation of wasabi (Wasabia japonica Matumura) in vitro.

    Hassan M, Fujime Y, Matsui T, Ikeda T, Okuda N, Suzuki H

    Journal of Japanese Society for Agricultural Technology Management   8   7-15   2001.7

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  • Torehalose changes hydraulic conductance of tissue-cultured soybean embryos. Reviewed

    Ikeda T, Iwaya-Inoue M, Fukuyama T, Nonami H

    Plant Biotechnology   17 ( 2 )   119-125 - 125   2000.6

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    DOI： 10.5511/plantbiotechnology.17.119

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  • カンキツの不定胚形成における内生オーキシンの影響

    池田 敬, 児島清秀, 薬師寺博, 小林省蔵, 野並 浩

    園芸学会雑誌   69   221 - 223   2000

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

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  • Hydraulic contribution in cell elongation of tissue-cultured plants: growth retardation induced by osmotic and temperature stresses and addition of 2,4-dichlorophenoxyacetic acid and benzylaminopurine

    T Ikeda, H Nonami, T Fukuyama, Y Hashimoto

    PLANT CELL AND ENVIRONMENT   22 ( 8 )   899 - 912   1999.8

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    DOI： 10.1046/j.1365-3040.1999.00463.x

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  • Growth dependence of ovaries of facultatively parthenocarpic eggplant in vitro on indole-3-acetic acid content

    T Ikeda, H Yakushiji, M Oda, A Taji, S Imada

    SCIENTIA HORTICULTURAE   79 ( 3-4 )   143 - 150   1999.2

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    DOI： 10.1016/S0304-4238(98)00210-6

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  • Water potential associated with cell elongation and cell division of tissue-cultured carnation plants

    Takashi Ikeda, Hiroshi Nonami, Toshio Fukuyama, Yasushi Hashimoto

    Plant Biotechnology   16 ( 2 )   115 - 121   1999

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society for Plant Cell and Molecular Biology  

    DOI： 10.5511/plantbiotechnology.16.115

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  • Growth and Water Status of Cucumber Seedlings under Altered Red/Far-Red Photon Flux Ratio

    Ikeda Takashi, Okada Kunihiko, Yamazaki Hiroko, Oi Ryu, Imada Shigeo

    Journal of the Japanese Society for Horticultural Science   68 ( 1 )   189 - 191   1999

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    Language：Japanese   Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE  

    Cucumber (Cucumis sativus L.) seedlings were subjected to altered red/far-red photon flux ratio to investigate how it affected their growth and water status. Stem elongation of seedlings was hastened when exposed to the 0.73 of red/far-red photon flux ratio but it was inhibited when the ratio was 1.88. The growth-induced water potential between the regions of elongation and maturation of the seedlings grown under the ratio of 0.73 was 0.09 MPa. However, the growth-induced water potential was 0.03 MPa when seedlings were grown under ratio 1.88.

    DOI： 10.2503/jjshs.68.189

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    Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469410

  • Water Status of Tomato Plugs Sprayed with(+)-S-Abscisic Acid and Stored in Dark at Room Temperature

    IKEDA Takashi, ODA Masayuki, IMADA Shigeo

    Environment control in biology   37 ( 2 )   109 - 114   1999

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  • Water Relations in Fruit Cracking of Single-Truss Tomato Plants.

    IKEDA Takashi, SAKAMOTO Yuka, WATANABE Shin-ichi, OKANO Kunio

    Environmental Control in Biology   37 ( 2 )   153 - 158   1999

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    Language：English   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    We investigated water relations of fruit cracking in single-truss tomato (<I>Lycopersicon esculentum</I> Mill.) plants grown hydroponically in a greenhouse. At 24 d after anthesis, the water potential of the culture solution was changed from -0.06 MPa (control plants) to -0.36 MPa (stressed plants) . The water status of the culture solution and plant tissues was measured with an isopiestic thermocouple psychrometer. Fruit cracking decreased from>80% of fruit in the control to <30% in the stressed plants. The water potential gradient between fruit flesh and water source was greater in the control plants than in the stressed plants. Between predawn and morning, turgor increased in the fruit flesh in the control plants but not in the stressed ones. The hardness of the fruit skin was not different between stressed and control plants. These results indicate that the water potential gradient and increased turgor in the tissues might trigger fruit cracking in single-truss tomato plants.

    DOI： 10.2525/ecb1963.37.153

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  • Association between water status and sucrose metabolism in cell suspension culture of carrot

    IKEDA T.

    Plant Biotechnol.   16 ( 5 )   375 - 379   1999

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  • Growth-induced Water Potential Regulates Growth of Tissue-cultured Plantlets under Environmental Stresses Reviewed

    IKEDA Takashi, NONAMI Hiroshi, HASHIMOTO Yasushi

    Environment control in biology   34 ( 2 )   141 - 146   1996.5

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    DOI： 10.2525/ecb1963.34.141

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  • Components of Water Potential related to tissue differentiation and cell expansion in tissue culture.

    Nonami h, Ikeda T, Maejima A, Fukuyama T, Hashimoto Y

    Acta Horticulturae   393 ( 393 )   77-84 - 84   1995.3

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  • Development of New tissue culture medium by using colloidal Buffers

    Toshio FUKUYAMA, Hiroshi NONAMI, Takashi IKEDA, Teruo HENMI, Yasushi HASHIMOTO

    Journal of SHITA   6 ( 4 )   234-240 - 240   1994.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS  

    A new tissue culture medium was developed by mixing colloidal buffer agents together with tissue culture medium solution. Powders of zeolite, bentonite and charcoal were added to the medium solution as colloidal buffer agents. By adding colloidal buffer agents, the buffering capacity of pH in the medium increased significantly against both acidification and alkalization. When embryos taken out from <I>Phaseolus vulgaris</I> seeds were grown in media containing colloidal buffer agents, the length of plantlets formed from the embryos became larger and the dry weight of the plantlets became heavier than plantlets grown in media containing no buffering agents. This suggests that colloidal buffer agents stabilize the pH of the culture medium and sustain cell elongation and growth of plantlets for growing period during tissue culture. Furthermore, the addition of colloidal buffers in culture media had an additional benefit of preventing the degradation of organic substances in the culture media while the media were heated for the purpose of sterilization.

    DOI： 10.2525/jshita.6.234

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Books

  • 植物工場ー生産植物の選定のための考察ー

    （ Role： Sole author）

    情報機構  2012.5 

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  • Plant Biotechnology and Agriculture; Prospects for the 21st century

    Tapingkae T, Zulkarnain Z, Kawaguchi M, Ikeda T, Taji A（ Role： Joint author）

    Academic Press  2012.1 

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  • 植物工場大全

    早田保義（ Role： Joint author）

    日経ＢＰ  2010.7 

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    Responsible for pages：68-76   Language：Japanese   Book type：Scholarly book

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  • 最新農業技術事典（6項目）

    農文協  2006.4 

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  • 野菜栽培の低コスト・省力化技術

    （ Role： Sole author）

    農林水産技術会議事務局編  2004.8 

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    Responsible for pages：「水ストレス」318-326   Language：Japanese   Book type：Scholarly book

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  • Cell expansion sustained by growth-induced water potential gradients in tissue-cultured plantlets. no.

    "Nonami H, Ikeda T, Ochi T, Fukuyama T, Hashimoto Y"（ Role： Joint author）

    Plant Cell Walls as Biopolymers with Physiological Functions  1992.4 

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    Responsible for pages：379-381   Language：English   Book type：Scholarly book

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MISC

  • 非破壊弾性測定によるトマトの硬さ評価． Reviewed

    崔博坤・池田敬

    明治大学科学技術研究所紀要   50   14 - 20   2015.3

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  • Effect of Various Metal-ions to Growth and Water Status of Tissue-cultured Soybean Embryos

    IKEDA Takashi, FUKUMOTO Shoma

    82   358 - 359   2013.3

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  • Growth and water status of tissue-cultured strawberry plants as affected by salt stress and different sugar concentration in medium International journal

    Okawai Y, Ikeda T, Taji A

    Acta Horticulturae   829   417-412 - 421   2009.6

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  • イチゴの花芽発達に悪影響を及ぼす高温遭遇の程度

    熊倉裕史, 山崎敬亮, 池田敬

    近畿中国四国農業研究成果情報(CD-ROM)   2007   2008

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  • 高温および水ストレスがイチゴ果実成長および品質に与える影響

    米澤和輝, 齋藤隆明, 池田敬, 山崎敬亮

    園芸学研究 別冊   7 ( 2 )   2008

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  • A no electricity hydroponic culture system for fruit vegetables. International journal

    Ikeda T, Hamamoto H, Yamazaki T, Tanaka K

    Acta Horticulturae   742 ( 742 )   95-97 - 97   2007.4

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  • Water relations in tissue-cultured soybean plants

    Takashi Ikeda, Hiroshi Nonami, Katsu Imai

    Environmental Control in Biology   45 ( 4 )   215 - 222   2007

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    Language：English   Publishing type：Book review, literature introduction, etc.   Publisher：Biotron Institute  

    DOI： 10.2525/ecb.45.215

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  • 第2編 低コスト・省力型野菜開発チーム 第7章 高温期における果菜類の生理・生態的特性解明 2 高ビタミンCイチゴにおける新作型開発のための最適温度条件の解明

    池田敬, 山崎敬亮, 浜本浩

    農林水産省農林水産技術会議事務局研究成果   ( 454 )   2007

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  • キャベツ,ブロッコリーの肥料制限苗の成長に及ぼすジベレリン散布の影響

    浜本浩, 吉田祐子, 池田敬, 村井恒治, 山崎敬亮

    園芸学研究 別冊   6 ( 2 )   2007

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  • 肥料制限されたキャベツ・ブロッコリーの育苗中における水分状態とアブシジン酸含量の変化

    池田敬, 浜本浩, 村井恒治, 薬師寺博, 山崎敬亮

    園芸学研究 別冊   6 ( 2 )   2007

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  • 高設イチゴ栽培における培地冷却が第一次腋花房に与える効果

    池田敬, 山崎敬亮, 熊倉裕史, 浜本浩

    園芸学研究 別冊   6 ( 1 )   2007

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  • Relationship between Water Status and Fruits Growth of Watermelon

    IKEDA T., HAMAMOTO H., IWAYA INOUE M., YAMASAKI K.

    75 ( 2 )   544 - 544   2006.9

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  • Using latent heat of water evaporation to cool culture medium for high-bench strawberry culture.

    Ikeda T, Kumakura H, Hamamoto H, Fujiwara T, Shimazu T

    Acta Horticulturae   708 ( 708 )   393-396 - 396   2006.5

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  • イチゴ高設栽培における栽培槽以下の遮光が出蕾および開花促進に及ぼす影響

    山崎敬亮, 池田敬, 浜本浩

    園芸学会雑誌 別冊   75 ( 2 )   2006

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  • 1〜2日間隔の暗期中断処理を行ったホウレンソウの生育に対する光照射時間の影響

    浜本浩・池田敬・山崎敬亮

    近畿中国四国農業研究   7 ( 7 )   47-49   2005.9

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  • 【研究報告】開口部を防虫ネットで被覆したコマツナ栽培ハウス内での作業温熱環境の改善

    嶋津光鑑・浜本 浩・池田 敬・岡田敏壽・萩森 学 『平成16年度近畿中国四国農業研究成果情報』297-298

    2005.3

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  • 【研究報告】冬季寡日照地域イチゴ促成栽培における花芽分化誘起処理効果と収穫パターンに及ぼす苗の葉齢と定植時期の影響

    熊倉裕史・藤原隆広・池田 敬・吉田祐子 『近畿中国四国農業研究センター研究報告』3:37-46

    2004.3

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  • 【研究報告】1〜2日間隔の暗期中断によるホウレンソウの生育促進

    浜本 浩・池田 敬・嶋津光鑑 『平成15年度近畿中国四国農業研究成果情報』311-312

    2004.3

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  • Water Status and Growth of Callus in Sturt's Desert Pea (Swainsona formosa) as Affected by Media Condition

    IKEDA Takashi, TAJI Acram, FUJIME Yukihiro, NOGUCHI Masaki

    Environmental Control in Biology   42 ( 3 )   177 - 183   2004

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    Language：English   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    This work was undertaken to investigate response of callus and the water status of Sturt's desert pea (<I>Swainsona formosa</I>) in vitro under various environmental stress conditions. Water potential of culture media ranged from -0.27MPa to -1.05MPa so that salt and osmotic stress and different concentration of sucrose could be applied to Sturt's desert pea calli grown in the tissue culture media. The percent increase in calli was highest in standard MS medium with 30g L<SUP>-1</SUP> sucrose but was not so when the water potential of medium was adjusted to the same water potential using standard MS plus mannitol. The water potential of callus tissue was almost the same as that of culture media at any range of MS and sucrose concentrations. Turgor of callus tissue did not alter significantly under any stress conditions. It is concluded that the optimum concentration of salt, sucrose and water status of medium could be estimated by this method and that standard MS concentration and its water status are suitable for the formation of Sturt's desert pea calli.

    DOI： 10.2525/ecb1963.42.177

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  • Water status and growth of callus in Sturt's desert pea (Swainsona formosa) as affected by media conditon.

    Ikeda Takashi, Ikeda T, Taji A, Fujime Y, Noguchi M

    Environment Control in Biology   42 ( 3 )   177 - 183   2004

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    Language：English   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    This work was undertaken to investigate response of callus and the water status of Sturt's desert pea (<I>Swainsona formosa</I>) in vitro under various environmental stress conditions. Water potential of culture media ranged from -0.27MPa to -1.05MPa so that salt and osmotic stress and different concentration of sucrose could be applied to Sturt's desert pea calli grown in the tissue culture media. The percent increase in calli was highest in standard MS medium with 30g L<SUP>-1</SUP> sucrose but was not so when the water potential of medium was adjusted to the same water potential using standard MS plus mannitol. The water potential of callus tissue was almost the same as that of culture media at any range of MS and sucrose concentrations. Turgor of callus tissue did not alter significantly under any stress conditions. It is concluded that the optimum concentration of salt, sucrose and water status of medium could be estimated by this method and that standard MS concentration and its water status are suitable for the formation of Sturt's desert pea calli.

    DOI： 10.2525/ecb1963.42.177

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  • 【研究報告】形状記憶合金コイルバネによるトンネル裾の自動開閉技術

    嶋津光鑑・浜本 浩・池田 敬 『平成14年度近畿中国四国農業研究成果情報』333-334

    2003.3

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  • Control of Fruit Quality by Salinity Stress at Various Fruit Development Stages of Single-Truss Tomato Grown in Hydroponics

    OKANO Kunio, NAKANO Yuka, WATANABE Shin-ichi, IKEDA Takashi

    Environment control in biology   40 ( 4 )   375-382 - 382   2002.12

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    Language：Japanese   Publisher：日本生物環境調節学会  

    DOI： 10.2525/ecb1963.40.375

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  • Water status of garlic callus under various salt and osmotic stress conditions

    T Ikeda, Y Fujime, S Terabayashi, S Date

    HORTSCIENCE   37 ( 2 )   404 - 405   2002.4

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  • Effects of trehalose on growth and controlling abscission of tepals in tulip cut flowers

    WATANABE G., TAKATA M., TODA S., WADA H., FUKUYAMA T., IKEDA T., NONAMI H., INOUE (IWAYA) M.

    69 ( 2 )   426 - 426   2000.9

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  • Torehalose changes hydraulic conductance of tissue-cultured soybean embryos. Reviewed

    Ikeda T, Iwaya-Inoue M, Fukuyama T, Nonami H

    Plant Biotechnology   17 ( 2 )   119-125 - 125   2000.6

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  • Torehalose changes hydraulic conductance of tissue-cultured soybean embryos.

    Ikeda Takashi, Ikeda T, Iwaya-Inoue M, Fukuyama T, Nonami H

    Plant Biotechnology   17 ( 2 )   119 - 125   2000

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  • Hydraulic contribution in cell elongation of tissue-cultured plants: growth retardation induced by osmotic and temperature stresses and addition of 2,4-dichlorophenoxyacetic acid and benzylaminopurine

    T Ikeda, H Nonami, T Fukuyama, Y Hashimoto

    PLANT CELL AND ENVIRONMENT   22 ( 8 )   899 - 912   1999.8

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  • Mechanism for Improving the Fruit Quality of Single-truss Tomato by Salinity

    OKANO K., SAKAMOTO Y., WATANABE S., IKEDA T.

    68 ( 1 )   221 - 221   1999.4

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  • 【研究報告】植物ホルモンフリー培地における単為結果性ナス培養子房の生長とオーキシンとの関係

    池田 敬・薬師寺 博・小田雅行・今田茂雄 『平成10年度野菜・茶業成果情報』1-2

    1999.3

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  • Growth dependence of ovaries of facultatively parthenocarpic eggplant in vitro on indole-3-acetic acid content

    T Ikeda, H Yakushiji, M Oda, A Taji, S Imada

    SCIENTIA HORTICULTURAE   79 ( 3-4 )   143 - 150   1999.2

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  • Association between water status and sucrose metabolisum in cell suspension culture of carrot.

    Ikeda Takashi, Ikeda T, Taji A, Hirai M, Yamashita I, Enomoto S, Noguchi M

    Plant Biotechnology   16 ( 5 )   375 - 379   1999

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  • Water potential associated with cell elongation and cell division of tissue-cultured carnation plants

    Takashi Ikeda, Hiroshi Nonami, Toshio Fukuyama, Yasushi Hashimoto

    Plant Biotechnology   16 ( 2 )   115 - 121   1999

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    Language：English   Publisher：Japanese Society for Plant Cell and Molecular Biology  

    DOI： 10.5511/plantbiotechnology.16.115

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  • Water relations in fruit cracking of single-truss tomoto plants.

    Ikeda Takashi, Ikeda T, Sakamoto Y, Watanabe S, Okano K

    Environment Control in Biology   37 ( 2 )   153 - 158   1999

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    Language：English   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    We investigated water relations of fruit cracking in single-truss tomato (<I>Lycopersicon esculentum</I> Mill.) plants grown hydroponically in a greenhouse. At 24 d after anthesis, the water potential of the culture solution was changed from -0.06 MPa (control plants) to -0.36 MPa (stressed plants) . The water status of the culture solution and plant tissues was measured with an isopiestic thermocouple psychrometer. Fruit cracking decreased from>80% of fruit in the control to <30% in the stressed plants. The water potential gradient between fruit flesh and water source was greater in the control plants than in the stressed plants. Between predawn and morning, turgor increased in the fruit flesh in the control plants but not in the stressed ones. The hardness of the fruit skin was not different between stressed and control plants. These results indicate that the water potential gradient and increased turgor in the tissues might trigger fruit cracking in single-truss tomato plants.

    DOI： 10.2525/ecb1963.37.153

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  • Association between water status and sucrose metabolism in cell suspension culture of carrot

    IKEDA T.

    Plant Biotechnol.   16 ( 5 )   375 - 379   1999

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  • Water Relations in Fruit Cracking of Single-Truss Tomato Plants.

    IKEDA Takashi, SAKAMOTO Yuka, WATANABE Shin-ichi, OKANO Kunio

    Environmental Control in Biology   37 ( 2 )   153 - 158   1999

    　More details

    Language：English   Publisher：Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists  

    We investigated water relations of fruit cracking in single-truss tomato (<I>Lycopersicon esculentum</I> Mill.) plants grown hydroponically in a greenhouse. At 24 d after anthesis, the water potential of the culture solution was changed from -0.06 MPa (control plants) to -0.36 MPa (stressed plants) . The water status of the culture solution and plant tissues was measured with an isopiestic thermocouple psychrometer. Fruit cracking decreased from>80% of fruit in the control to <30% in the stressed plants. The water potential gradient between fruit flesh and water source was greater in the control plants than in the stressed plants. Between predawn and morning, turgor increased in the fruit flesh in the control plants but not in the stressed ones. The hardness of the fruit skin was not different between stressed and control plants. These results indicate that the water potential gradient and increased turgor in the tissues might trigger fruit cracking in single-truss tomato plants.

    DOI： 10.2525/ecb1963.37.153

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  • Water Status of Tomato Plugs Sprayed with(+)-S-Abscisic Acid and Stored in Dark at Room Temperature

    IKEDA Takashi, ODA Masayuki, IMADA Shigeo

    Environment control in biology   37 ( 2 )   109 - 114   1999

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  • Water status of tomato plugs sprayed with (+)-S-abscisic acid and stored in the dark at room temperature.

    Ikeda Takashi, Ikeda T, Oda M, Imada S

    Environment Control in Biology   37 ( 2 )   109 - 114   1999

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  • Growth and Water Status of Cucumber Seedlings under Altered Red/Far-Red Photon Flux Ratio

    Ikeda Takashi, Okada Kunihiko, Yamazaki Hiroko, Oi Ryu, Imada Shigeo

    Journal of the Japanese Society for Horticultural Science   68 ( 1 )   189 - 191   1999

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    Language：Japanese   Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE  

    Cucumber (Cucumis sativus L.) seedlings were subjected to altered red/far-red photon flux ratio to investigate how it affected their growth and water status. Stem elongation of seedlings was hastened when exposed to the 0.73 of red/far-red photon flux ratio but it was inhibited when the ratio was 1.88. The growth-induced water potential between the regions of elongation and maturation of the seedlings grown under the ratio of 0.73 was 0.09 MPa. However, the growth-induced water potential was 0.03 MPa when seedlings were grown under ratio 1.88.

    DOI： 10.2503/jjshs.68.189

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    Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469410

  • 【研究報告】園芸用語の解説、浸透圧調節機能

    『施設園芸』40:30

    1998.9

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  • 接ぎ木したトマトおよびキュウリセル苗の常温暗黒貯蔵におけるアブシジン酸の影響．

    池田 敬・小田雅行

    農業および園芸   72   409-411   1997.3

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  • Growth-induced Water Potential Regulates Growth of Tissue-cultured Plantlets under Environmental Stresses Reviewed

    IKEDA Takashi, NONAMI Hiroshi, HASHIMOTO Yasushi

    Environment control in biology   34 ( 2 )   141-14 - 146   1996.2

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    DOI： 10.2525/ecb1963.34.141

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  • Changes of inner auxin content at an early stage of citrus somatic embryogenesis.

    池田敬, 児島清秀, 薬師寺博, 小林省蔵, 野並浩, 橋本康

    園芸学会雑誌 別冊   64 ( 1 )   1995

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  • Development of New tissue culture medium by using colloidal Buffers

    Toshio FUKUYAMA, Hiroshi NONAMI, Takashi IKEDA, Teruo HENMI, Yasushi HASHIMOTO

    Journal of SHITA   6 ( 4 )   234-240 - 240   1994.9

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    Language：Japanese   Publisher：JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS  

    A new tissue culture medium was developed by mixing colloidal buffer agents together with tissue culture medium solution. Powders of zeolite, bentonite and charcoal were added to the medium solution as colloidal buffer agents. By adding colloidal buffer agents, the buffering capacity of pH in the medium increased significantly against both acidification and alkalization. When embryos taken out from <I>Phaseolus vulgaris</I> seeds were grown in media containing colloidal buffer agents, the length of plantlets formed from the embryos became larger and the dry weight of the plantlets became heavier than plantlets grown in media containing no buffering agents. This suggests that colloidal buffer agents stabilize the pH of the culture medium and sustain cell elongation and growth of plantlets for growing period during tissue culture. Furthermore, the addition of colloidal buffers in culture media had an additional benefit of preventing the degradation of organic substances in the culture media while the media were heated for the purpose of sterilization.

    DOI： 10.2525/jshita.6.234

    CiNii Research

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  • CELL ELONGATION SUSTAINED BY GROWTH-INDUCED WATER POTENTIAL GRADIENTS IN TISSUE-CULTURED PLANTLETS

    T IKEDA, H NONAMI, T FUKUYAMA, Y HASHIMOTO

    PLANT PHYSIOLOGY   102 ( 1 )   156 - 156   1993.5

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    Language：English   Publishing type：Research paper, summary (international conference)  

    Web of Science

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  • 76 インゲンマメにおける生長制御(2) : 胚培養における濃度ストレスと温度ストレス

    池田 敬, 野並 浩, 越智 竜雄, 木山 浩二, 福山 寿雄, 橋本 康

    日本作物學會紀事   61 ( 2 )   151 - 152   1992.10

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    Language：Japanese   Publisher：日本作物学会  

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Presentations

  • Effects of Endogenous Auxin on Citrus Somatic Embryogenesis

    Ikeda Takashi, Kojima Kiyohide, Yakushiji Hiroshi, Kobayashi Shozo, Nonami Hiroshi

    Journal of the Japanese Society for Horticultural Science  2000  THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

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    Event date： 2000

    Language：Japanese  

    This study investigated the changes in endogenous auxin concentration during embryogenesis of citrus (Citrus sinensis Osb.) in tissue culture. Embryogenic callus (EC) was induced from ovules of 'Trovita orange' and 'Oomishima navel'. In both varieties, the EC having greater capacity for embryogenesis had a correspondingly higher endogenous indole-3-acetic acid (IAA) concentration. When the EC in 'Washington navel' and 'Oomishima navel' were cultured on hormone-free media which can induce embryogenesis, the IAA concentration increased for 2 days, then rapidly decreased and stabilized 14 days later. These results suggest that the decrease in IAA concentration is closely related to citrus embryogenesis.

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    Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10469693

Awards

  • 日本農業工学会フェロー

    2024  

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    Award type：International academic award (Japan or overseas)  Country/Region：Japan

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