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水稻不育系、保持系、恢复系总称水稻“三系”。1.不育系:水稻为白花授粉作物。水稻的雄性生殖器官花粉发生退化或败坏,甚至引起花药的退化、萎缩、畸性和丧失开裂能力等,使水稻不能白花授粉、结实,具有这一不育性能的叫水稻不育系,或称水稻雄性不育系。据中山大学生物系遗传组等单位对水稻不育材料花粉形成与发育的细胞形态等作的初步观察,水稻不育系类型中主要败育期是出现在单核花粉
Male sterile lines, maintainer lines and restorer lines are generally called “three lines” of rice. 1. CMS: rice is a white pollination crop. The pollen of male reproductive organs of rice is degenerated or corrupted, and even causes the degradation, atrophy, distortion and loss of anther of anther, which make rice can not be pollinated and sturdy with white flowers. Rice male sterile line. According to the Department of Biology, Zhongshan University, Department of Biology and other units of rice sterile material pollen formation and development of cell morphology for the initial observation, the type of male sterile lines in the main abortion period is in mononuclear pollen