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水稻核雄性不育可分为显性核雄性不育和隐性核雄性不育两大类。隐性核雄性不育可分为普通核雄性不育、光敏核雄性不育、温敏核雄性不育和光温互作核雄性不育四类。光敏核雄性不育有长日不育型和短日不育型两种。温敏核雄性不育有高温不育型和低温不育型两种。华南地区以选育不育临界温度低于 2 4℃的高温不育型温敏核不育系为主 ,长江中下游地区应以选育不育临界低的长日不育型光敏核不育系为首选育种目标 ,而北部地区宜选用低温不育型温敏核不育系
Rice nuclear male sterility can be divided into dominant nuclear male sterility and recessive nuclear male sterility two categories. Recessive nuclear male sterility can be divided into common nuclear male sterility, photo-sensitive nuclear male sterility, thermo-sensitive nuclear male sterility and light-temperature interaction and nuclear male sterility. Photosensitive nuclear male sterility with long-day infertility and short-day two types of infertility. Thermo-sensitive nuclear male sterility has two types of high-temperature infertility and low-temperature infertility. In southern China, the temperature-sensitive genic thermo-sensitive genic male sterile lines with low criticality temperature of 24 ℃ were the main selection. The middle and lower reaches of the Yangtze River should be sensitive to long-sterile genic male sterile Department of breeding objectives for the preferred, while the northern region should use low temperature sterile thermo-sensitive genic male sterile lines