Studies on regulatory mechanisms of dormancy accompanied by storage organ formatin in bulb and rhizome plants.

Research Project

Project/Area Number	20780023
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Horticulture/Landscape architecture
Research Institution	Kyushu University
Principal Investigator	MASUDA Jun-Ichiro Kyushu University, 熱帯農学研究センター, 講師(研究機関研究員) (60452744)
Project Period (FY)	2008 – 2009
Project Status	Completed (Fiscal Year 2009)
Budget Amount *help	¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000) Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000) Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords	アイリス / エチレン / ジベレリン / 食用ハス / アブシジン酸 / 球根形成 / 日長
Research Abstract	There is a few reports on regulatory mechanisms of dormancy accompanied by storage organ formation in bulb and rhizome plants, although it is important for agriculture and scientific development to clarify its regulatory mechanisms. It was shown that bulb growth was controlled by temperature in bulblets of Dutch iris. It was demonstrated that lotus plant was able to sense photoperiod in transition to storage organ after 2 weeks of transplanting. It was also suggested that storage organ was formed by decrease in expression levels of glloberellin biosynthesis enzyme gene and increase in expression levels of abscisic acid biosynthesis enzyme gene under short day condition.