| 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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| 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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