对湖南省近期内新选育的水稻光温敏核不育材料的育性进行了比较研究。在恒温２４℃条件下，有７个材料的花粉可染率和结实率均为零；有４个材料有极少量可染花粉，结实率为零。在模拟１９８９年盛夏低温条件下，有６个材料的花粉可染率和结实率均为零；有６个材料有极少量可染花粉，结实率为零。 The fertility of photo-thermo-sensitive genic male sterile materials newly selected in Hunan Province in recent years were compared. Under the conditions of constant temperature of 24 ℃, the pollination rate and seed setting rate of seven materials were all zero; there were four materials with a very small amount of available pollens and the seed setting rate was zero. Under the simulated mid-summer low temperature condition, six materials had zero pollination and seed setting rate. Six of the materials had very few pollens and the seed setting rate was zero.