摘要
水稻无花药型不育材料的发现及其转育后代育性初步观察①１宋德明１王志２刘永胜１王茂理１龙太康２孙敬三１（四川省绵阳市农业科学研究所绵阳６２１００２）２（中国科学院植物研究所北京１０００９３）关键词水稻，野生稻，无花药细胞质雄性不育ＤＥＶＥＬＯＰＭＥＮＴ...
Exploring novel source of cytoplasmic male sterility (CMS) is essential to stablize the productivity of hybrid rice. Dongxiang wild rice (Oryza rufipogon Griff.) has been recorded as the northest distributed wild rice in China that is resistant to several biotic or abiotic stresses. A male sterile line M01A defective of anther was identified in the F3 population from an interspecific cross between Dongxiang wild rice and cultivated rice (Oryza sativa L. ssp. indica). Crosses and successive backcrosses were made between M01A and a variety of breeding materials and 19 progeny families were obtained. Among the families, some were defective of anthers, and some have twisted and degenerated anthers without microsporogenesis or with a few typical aborted pollen. These results implicate that the male sterility of M01A was genetically regulated by the interaction between the nucleus and the cytoplasm. Only one cross produced malefertile hybrid in which the paternal parent contains a part of the genome of Dongxiang wild rice, which implies that Dongxiang wild rice itself could be the source of the fertility restorer to M01A.
关键词
水稻
野生稻
无花药
细胞质
雄性不育
转育后代
Oryza sativa, Oryza rufipogon, Antherdefective cytoplasmic male sterility line
