BREEDING AND CHARACTERIZATION OF HOMOKARYOTIC HETEROPLASMIC MALE STERILE LINES IN RICE (ORYZA SATIVA)
文献类型： 外文期刊
作者： Mei, Qiming 2 ; Xie, Rong 3 ; Liu, Chengyuan 3 ; Zhou, Xichang 2 ; Zhu, Yingguo 1 ;
作者机构： 1.Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China
2.Wuhan Univ, Ctr Gardens, Wuhan 430072, Peoples R China
3.Sichuan Acad Agr Sci, Rice & Sorghum Res Inst, Luzhou 646000, Peoples R China
关键词： cytoplasmic male-sterility;pollen abortion type
期刊名称：PAKISTAN JOURNAL OF BOTANY （ 影响因子：0.972； 五年影响因子：0.988 ）
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收录情况： SCI
摘要： Twelve different Cytoplasmic Male-Sterile (CMS) lines were crossed with 18 rice varieties. From the hybrid with japonica rice Nongken 58, twelve homokaryotic-heteroplasmic male sterile lines were developed in B7F1 after successive backcrossing and selection for stable male sterility and desirable agronomic traits such as flowering habit and high outcrossing rate. The experimental results demonstrated that expression of the CMS factors were influenced by the corresponding nuclear genes. Three pollen abortion types, including the typical, the spherical and the stained abortion, were observed in the homokaryotic-heteroplasmic male sterile lines. Formation of the aborted pollen grains was influenced by the interaction among specific cytoplasmic and the corresponding nuclear genes. As the CMS carriers, these homokaryotic-heteroplasmic lines will have significant impact on the utilization of multiple types of CMS in hybrid rice breeding. What is more important is that these CMS lines are the invaluable materials for the investigation of the molecular mechanism of CMS formation in rice.
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