| 1. |
Yoshida, S., Kogusuri, A., Igarashi, K., Eguchi, T. and Matsuoka K., Environmental control of plants in a tall type of phytotron glass room, The XX CIGR World Congress 2022 "Sustainable Agricultural Production -Water, Land, Energy and Food-" , 2022.12. |
| 2. |
Accumulation of the effective ingredient during corm growth in the medicinal plant Pinellia ternata.
○Mayuki SAGAWA1, Hibiki SHIMOKAWA2, Hiroyuki TANAKA3,
Satoshi YOSHIDA4, Ken MATSUOKA4, Toshihiko EGUCHI4
(1Laboratory of Horticultural science, Kyushu Univ., 2Plant Nutrition Laboratory, Kyushu Univ.,
3Pharmaceutical Sciences, Kyushu Univ., 4Biotron Application Center, Kyushu Univ.)
A high yeild strain of the medicinal plant Pinellia ternata was cultivated under the artificial light condition where the air temperature and humidity were controlled at constant level, and the time-course of the corm growth and changes in the content of the effective ingredient were investigated. Although the corm size and corm yield increased with the length of the cultivation period, dry matter ratio showed no significant difference among each harvest time. The increase in the amount of effective ingredient per 1 mg of dried corm appeared to increase with the corm growth, however, little difference was observed between those of corms cultivated for 11 and 15 w. Thus, the effective ingredient content in the corm may not increase after 11 w cultivation.
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| 3. |
Divergence of polyploidy in the medicinal plant Pinellia ternata distributed in Japan
Kosuke INOUE1，Yukio OZAKI2，Yuki MIZUNOE2，Hiroyuki TANAKA3，Satoshi YOSHIDA4，Ken MATSUOKA4，Toshihiko EGUCHI4
1School of Agriculture，Kyushu Univ．，2 Faculty of Agriculture，Kyushu Univ．， 3Pharmaceutical Sciences, Kyushu Univ．，4 Biotron Application Center, Kyushu Univ.
The medical plant Pinellia ternata which were gathered from all over Japan were researched the ratio of fluorescence intensity, pollen diameter and germination rate of pollen. It was found that there is a divergence of polyploidy. However, no correlation was suggested among the ratio of fluorescence intensity, pollen diameter, and germination rate of pollen.
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| 4. |
Cultivation of the medicinal plant Pinellia ternata under the artificial light.
Toshihiko EGUCHI1, Hiroyuki TANAKA2, Satoshi YOSHIDA1, Ken MATSUOKA1
1Biotron Application Center, Kyushu Univ., 2Pharmaceutical Sciences, Kyushu Univ.
A high yeild strain of the medicinal plant Pinellia ternata was cultivated under the artificial light condition and the corm growth and quality were compared with the corms obtained from the plants grown under the natural light condition. Plants grown under the artificial light produced the similar corm yield with the similar quality to the plants grown under the natural light.. |
| 5. |
Temperature effect on growth of the medicinal plant Pinellia ternata.
Toshihiko EGUCHI1, Hiroyuki TANAKA2, Satoshi YOSHIDA1, Ken MATSUOKA1
1Biotron Application Center, Kyushu Univ., 2Pharmaceutical Sciences, Kyushu Univ.
Temperature effects on the growth of the medicinal plant Pinellia ternata were examined under the air temperatures of 20, 25, and 30℃. The highest yield of the tuber was observed in Kyoto strain grown under 25℃, and the content of the effective ingredient was higher than that of the raw drag on the market.
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| 6. |
Eguchi, T., Hiroyuki Tanaka, Satoshi YOSHIDA, Ken Matsuoka, Influence of Ground Water Level on the Growth of the Medicinal Plant Pinellia ternata Breit. in a Solid Substrate Culture System, The International Conference on Plant Factory 2014, 2014.11, Many crude drugs used in Kampo medicines in Japan represent untapped medicinal resources. Domestication of the wild plants from which these drugs are derived and preservation of their natural habitats are necessary for establishing a stable supply of Kampo medicines. Here, we investigated the influence of the moisture condition of root medium on the growth of Pinellia ternata Breit. by using a sub-irrigation solid substrate culture system. The moisture condition was controlled by maintaining a constant ground water level (GWL). Plants were grown for 15 weeks under a GWL of either 4 cm (GWL-4) or 8 cm (GWL-8) below the corm base in a phytotron glass room at 25°C and 70% relative humidity. The water content of the root media around the corm in GWL-4 was only 1% higher than that in GWL-8. However, water content apparently affected corm enlargement and the development of new bulbils. Relative yield of the corm per plant, compared with the initial weight, was ~400% in GWL-4 and ~200% in GWL-8. The number of bulbils produced in a plant was 13.5 in GWL-4 and 4.4 in GWL-8. The effective ingredient, a kind of water-soluble polysaccharide consisting mainly of arabinose, was about 10% higher in GWL-8 corms than in GWL-4 corms. Moreover, when comparing the two conditions, the relative difference in corm yield was remarkably larger than that observed for the effective ingredient content. Overall, productivity was considered to be higher in GWL-4 than in GWL-8.. |
| 7. |
K. Kinoshita, H. Yamamoto, T. Eguchi, K. Zushi, K. Nakazono, T. Yoshioka, A. Kubota, K. Matsuo, M. Kitano : Investigation of compatible solutes for feezing resistance in tea leaves.. |
| 8. |
T. Eguchi, T. Suzuki, J. Tateishi, J. Chikushi, S. Yoshida, I. Miyajima, and M. Kitano. Time course of carrot storage root growth in a subirrigation solid culture system. . |
| 9. |
Eguchi, T., T. Suzuki, J. Tateishi, J. Chikushi, S. Yoshida., I. Miyajima, and M. Kitano Studies on Soil-less Culture of Carrot (2) Influence of Root Temperature on Yield and Quality of Storage Root. Annual meeting of Japanese Society for Horticultural Science 2009 (Autumn).
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| 10. |
T. Eguchi, T. Suzuki, H. Miyamoto, S. Yoshida, J. Chikushi, and M. Kitano. Effects of soil temperature on growth and quality of carrot storage root during late growth stage. . |
| 11. |
Eguchi, T., T. Suzuki, H. Miyamoto, M. Hamakoga, J. Chikushi, S. Yoshida., and M. Kitano Relationship between water content of root media and growth of storage root in carrot hydroponics. Annual meeting of Japanese Society for Horticultural Science 2008 (Autumn).
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| 12. |
Eguchi, T., S. Moriyama, J. Tateishi, I. Miyajima, J. Chikushi and S. Yoshida. Studies on hydroponics for top production of sweetpotato cultivar ‘Suioh’ (2).Yields and quality under different conditions of nutrient solution concentration and light intensity. Annual meeting of Japanese Society for Horticultural Science 2007 (Autumn).
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| 13. |
Eguchi T. and Yoshida S. Effects of sucrose and cytokinin application to roots on tuberous root formation of sweetpotato. . |
| 14. |
T. Eguchi. A trail of soilless cultivation of carrots.. |
| 15. |
Eguchi T. and Yoshida S. Environmental physiological studies on storage root formation in sweetpotatoes (4). Development of the root under hypoxic condition. Joint Meeting on Environmental Engineering in Agriculture 2006.. |
| 16. |
Moriyama S, Hamakoga M, Tou K, Miyajima I, Chikushi J, Yoshida S and Eguchi T. Fundamental studies on hydroponics of a sweetpotato cultivar "Suioh" for utilization of the shoot (1) Differences in the yield and the quality between two different cultivation system. Annual meeting of Japanese Society for Horticultural Science 2006 (Autumn).. |
| 17. |
Eguchi T. Effect of root-zone O2 concentration on tuberous root formation in sweetpotato (Ipomoea batatas Lam.).. |
| 18. |
Eguchi T. and Yoshida S. Environmental physiological studies on storage root formation in sweetpotatoes (3). Lignification of the root under the conditions where the tuberous root never formed. Joint Meeting on Environmental Engineering in Agriculture 2005.. |
| 19. |
Eguchi T. and Yoshida S. Methods of sweetpotato hydroponics for research of tuberous root formation.. |
| 20. |
Eguchi T. and Yoshida S. Environmental physiological studies on storage root formation in sweetpotatoes (2). Effect of gas exchange interference on storage root formation. Joint Meeting on Environmental Engineering in Agriculture 2004.. |
| 21. |
Eguchi T. and Yoshida S. Effects of sugars and plant hormone on tuberous root formation in sweetpotatoes. Annual meeting of Japanese Society for Horticultural Science 2004 (Autumn).. |
