Phenotypic characterization and genetic analysis of a partially female-sterile mutant in Brassica napus

文献类型： 外文期刊

第一作者： Li, Chun-Hong

作者： Li, Chun-Hong;Fu, San-Xiong;Chen, Xin-Jun;Qi, Cun-Kou

作者机构：

关键词： Brassica napus;Female sterility;Mutation;Papillar cells;Genetic analysis

期刊名称：PLANT SCIENCE （ 影响因子：4.729； 五年影响因子：5.132 ）

ISSN： 0168-9452

年卷期： 2012 年 185 卷

页码：

收录情况： SCI

摘要： mfs is a partially female-sterile Brassica napus mutant derived from a spontaneous mutation. When the mutant is crossed as a female, very poor seed set is obtained, whereas it is fertile as a pollen donor. The floret of the mutant consisted of almost equal-length stamens, a short pistil, a flat style and ovary, and the stigma was chapped. Measures of pollen viability and pollen tube growth in vitro indicated that the mutation enhanced pollen viability. The papillae of mfs consisted of two conjoint bilobed domes, and the papillar cells were sparse, oblate and large at anthesis, but become withered and senesced quickly afterward. Pollen grains could germinate over the papillar cells, but pollen tubes could not penetrate into it. After flower opening, the number of organelles in mfs papillar cell decreased, the structure of it distinctly degenerated, and vacuolization was abnormally high. Genetic analysis of 3 F2 populations and 3 BC1F1 populations suggested that the mutant trait was controlled by two recessive genes. (C) 2011 Elsevier Ireland Ltd. All rights reserved.

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