稻类雄性不育系的花粉败育途径研究

对水、旱稻５ 个两系不育系和１ 个三系不育系的花粉败育途径的观察发现，野败三系不育系珍汕９７Ａ 和３ 个两系不育系是以核退化为典型特征的花粉败育途径，其败育时期发生在单核晚期。新选育成的旱稻昆植Ｓ－１ 和水稻昆植Ｓ－２两个两系不育系则是以核增生为典型特征的花粉败育途径。对两类花粉败育途径的细胞学特点和不育的稳定性进行了比较分析

STUDY ON THE ABORTIVE PROCESSES OF POLLEN IN MALE STERILE RICE

The abortive processes of pollen in five genic male sterile lines and one cytoplasmic genetic male sterile line with cytoplasm of wild rice are reported. The authors found that the cytoplasmic genetic MS Zhenshan 97A line is a typical nuclear degenerative type of pollen abortion. The sign of abortion manifested at the late mononuclear stage.The genic male sterile lines are all typical nuclear proliferative type. They show their apparent abnormality as failure of membrane formation between the two daughter nuclei at the telophase of the first meiotic division. This type of male sterility is very stable, and no flower with dehiscent anthers is present in the panicles.