Mechanism of fruit-set failure and seedless fruit formation at low temperatures in tropical fruit trees
| Project/Area Number |
24658028
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Kyoto University |
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Principal Investigator |
HIGUCHI Hirokazu 京都大学, (連合)農学研究科(研究院), 准教授 (50303871)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 熱帯果樹 / 受粉 / 温度 / 受精 / 結実 / 熱帯果樹園芸 / 生態生理学 / チェリモヤ / レイシ |
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| Outline of Final Research Achievements |
Night temperature of cherimoya flower was regulated sectionally to decide that lower temperature less than 8 ºC reduced seed number and symmetricity, and that minimum temperature for several days before pollination detrimentally affected seed number. Lychee flower was subjected to low temperature and resulted in seedless fruit in some cultivars at a certain temperature regimes. Shrinked embryo or absence of egg sell could be an incidence of seedless fruit.
Temperature regulation of durian flower revealed that Monthong cultivar formed irregular ovule in shape frequently than other cultivars, and this might be a factor to increase fruit drop during young stage after suffering lower night temperature. Failure in fruit-set was caused by developmental failure of ovule after pollination.
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Report
(4 results)
Research Products
(14 results)
