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Position: Home > Articles > Studies on Raising Setting Percentage in Seed Production of Hybrid Rice Seed 1997 (1)

杂交水稻制种提高结实率的研究

作  者：
许琨;舒昆;莫春诚;唐铁钢
单  位：
湖南省邵阳县种子公司;湖南省邵阳市种子管理站;湖南省种子管理站
关键词：
杂交水稻制种;结实率;后期施肥;父本大龄秧;机械授粉
摘  要：
杂交水稻制种不同于水稻栽培、其结实由柱头外露结实和非柱头外露结实两部分构成；空壳中90％以上是由于没有授粉受精造成的：90％以上的受精拉都能正常发育结实。柱头外露率和受精率与结实率呈显著正相关。后期施肥、父本大龄秧和机械授粉能有效地提高柱头外露率、花遇优度和结实率及制种产量。
译  名：
Studies on Raising Setting Percentage in Seed Production of Hybrid Rice
作  者：
Xu Kun (Hunan Seed Administrative Station, Changsha, 410005)Shu Kun (Shaoyang Municipal Seed Administiative Station of Hunan Province. 422000)Mo chuncheng; Tangtiegang (Shaoyang County Sdde Company of Hunan Province. 4221000)
关键词：
Seed Production of hybrid rice;Setting percentage;Applying fertilizer in later stage;Planting longage seedlings of male parent;Pollinating with machine
摘  要：
Seed Production of hybrid rice being different from the culture of rice, the grains were composed of seed setswith exserted and non-exserted stigma. Over 90% of empty qrains was due to pistil without pollination and fertiliza-tion. Over 90% of fertilized spikelets could develop into seed. The setting percentage was bound up with the rate ofstigma exsertion and fertilzation． Applying fertilizer in later stage,planting long—age seedlings of male parent， andpollinating with machine could effectively raise the rate of stigma exsertion,the amount of Pollen，the synchronism offlowering of male and female parents,the rate of seed set,and the yield of seed production of hybrid rice.

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