Genetic analysis and molecular mapping of a nuclear recessive male sterility gene, ms91(t), in rice
文献类型: 外文期刊
第一作者: Liu, Xia
作者: Liu, Xia;Wang, Songwen;Wang, Yong;Wei, Shu
作者机构:
关键词: rice;male sterility;ms91(t);molecular mapping;CHROMOSOMES;MUTANTS;MARKERS
期刊名称:GENOME ( 影响因子:2.166; 五年影响因子:2.474 )
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收录情况: SCI
摘要: Mutations that result in plant male sterility provide means not only to probe reproductive development but also to facilitate commercial heterosis application and. hybrid seed production. In this study, we report a novel male sterility gene, ms91(t), in a spontaneous mutant line (SH38) from a Chinese rice cultivar (Oryza sativa subsp. japonica 'Jijing14'). The sterility of SH38 was studied by examining its progenies derived from crosses with 6 japonica cultivars. Corresponding F-2 populations were obtained by selfing each of the 6 F(1)s and a backcross population was produced by crossing SH38 to the F, of SH38 x C18. Our results revealed that SH38 has normal agronomic traits but produces no pollen grains. Segregations of male-sterile and male-fertile progenies in the F2 and backcross populations fit well with ratios of 3:1 and 1:1, respectively, indicating that ms91(t) is a single recessive gene. Amplified fragment length polymorphism (AFLP) analysis of SH38 and Jijing14 plants showed the presence of a unique band in SH38. Simple sequence repeat (SSR) analysis of the bulked and individual progenies of the F-2 Population of SH38 x C18 showed linkage of ms91(t) with the SSR marker RM5853 on chromosome 1. Subsequently, ms91(t) was fine-mapped to the interval between markers RM7075 (3.75 cM) and RM5638 (3.57 cM). Our results would facilitate the isolation of ms91(t) and male sterility in heterosis application.
分类号: Q3
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