籼型光敏核不育水稻营养生长期光温条件对育性转换条件的影响  

Influence of photo-and thermo-conditions during vegetative growth of PGMS on its fertility alteration

作　　者：张自国[1] 曾汉来[1] 李玉珍[1] 元生朝[1] 张端品[1] 

机构地区：[1]华中农业大学,430070

出　　处：《杂交水稻》1992年第5期34-36,共3页Hybrid Rice

基　　金：国家自然科学基金; "863"资助项目

摘　　要：光敏核不育水稻（ＰＧＭＲ）营养生长期所遇光温条件，对后期育性转换的条件有一定影响。前期高温或短日条件，有使育性转换下限临界温度增高的作用；前期低温或长日条件，有使育性转换下限临界温度降低的影响。就此，作者讨论了各地所测的下限临界温度的相互参考价值。Conditions inducing the fertility alteration of photosensitive genic male sterile rice (PGMS) is the key point for the utilization of PGMS in hybrid rice production.The Photor-and thermo-conditions during vegetative growth phase can change the conditions inducing PGM$, fertility,alteration in the generative growth phase.High temperature and short-day conditious during vegetative growth phase can lower the critical Ptescribed minimum temperature of fertility alteration.Low. temperature and long-day , conditions during vegetstive growth phase of PGMS can decrease the critical prescribed minimum temperature of fertility alteration.As the photo-and thermo-conditions during vegetative growth phase of PGMS are various in different rice areas and seasons. the conditions .nducing fertility alteration are not constant.

关 键 词：水稻 光敏核不育 育性转换 籼稻 

分 类 号：S511.210.3[农业科学—作物学]