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- W2373769770 abstract "In order to elucidate the physiological mechanism of the high-temperature tolerance difference between the two rice varieties,996 and 4628,the influences of high-temperature on the fertility of pollen spikelet and grain weight were conducted with the plants that grow both in nature field and inside growth chamber with high-temperature treatment,using the hybrid rice,Shanyou63 and Jinyou207 as control varieties.The results showed that:1) There are great differences on the fertility of pollen among the four rice varieties,with the minimum of index of heat sensitivity(HIS) of 21.7% for 996,and the maximum HIS of 75.35% for 4628;2) After high-temperature treatment for 7 days at flowering,the percentage of fertilized grains of four varieties decreased obviously,by the lower 18.9% for 996 and the higher 42.8% for 4628,respectively compared to the natural ones;3) Both treatment I(7 days treatment with 36 ℃ high-temperature at flowering) and II(36 ℃ hig h-temperature treatment from flowering to grain-filling) decreased the weight of grain and brown rice.As for treatment I,it decreased to 90%～93% for Shanyou63,Jinyou207 and 996,whereas,70% for 4628.As for treatment IIi,t decreased to 71.6%～73.8% for the CVs and 996,but that of 4628 couldn’t be detected for lacking of enough grains." @default.
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- W2373769770 date "2005-01-01" @default.
- W2373769770 modified "2023-09-23" @default.
- W2373769770 title "Influences of High-Temperature Stress on the Fertility of Pollen,Spikelet and Grain-Weight in Rice" @default.
- W2373769770 hasPublicationYear "2005" @default.
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