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作物学报 ›› 2009, Vol. 35 ›› Issue (6): 1151-1155.doi: 10.3724/SP.J.1006.2009.01151

• 研究简报 • 上一篇    下一篇

一个水稻雄性不育突变体的遗传分析和基因定位

初明光,李双成**,王世全,邓其明,张婧,丁磊,文勇,郑爱萍,周星宇,李平*   

  1. 四川农业大学水稻研究所，四川温江611130
  • 收稿日期:2009-01-12 修回日期:2009-03-23 出版日期:2009-06-12 网络出版日期:2009-04-16
  • 通讯作者: 李平，E-mail:liping6575@163.com
  • 基金资助:

    本研究由国家自然科学基金项目（30800084）和国家高技术研究发展计划（863计划）项目（2006AA10A103）资助。

Genetic Analysis and Molecular Mapping of a Male Sterile Mutant in Rice

CHU Ming-Guang,LI Shuang-Cheng**,WANG Shi-Quan,DENG Qi-Ming,ZHANG Jing,DING Lei,WEN Yong,ZHENG Ai-Ping,ZHOU Xing-Yu,LI Ping   

  1. Rice Research Institute,Sichuan Agricultural University,Wenjiang 611130,China
  • Received:2009-01-12 Revised:2009-03-23 Published:2009-06-12 Published online:2009-04-16
  • Contact: LI Ping，E-mail:liping6575@163.com

PDF

1949

被引次数

24

摘要：

ms-np是一个源于自然突变的水稻雄性不育突变体，明显较正常植株矮小，叶色浓绿。小花解剖观察发现，突变体小花花丝细长，花药干瘪，呈白色透明状，但雄性器官的数量和雌性器官正常。碘染证实，突变体的花药壁内没有花粉粒着色，是一个典型的无花粉型雄性不育材料。5个F2和2个BC1F1群体的遗传分析显示，该突变性状受1对隐性基因控制。对组合ms-np/M63衍生F2不育单株的连锁分析表明，ms-np(t)基因位于水稻第6 染色体微卫星标记RM541和RM343之间，遗传距离分别为15.2 cM和7.9 cM。

关键词: 水稻, 雄性不育, 遗传分析, 基因定位

Abstract:

Male sterility is an important inheritance phenomenon in plants and widely used in hybrid seed production. The male sterile plant can't produce normal male gametophyte for reproduction, while the female counterpart is normal. So far, more than 100 of male sterile mutants or genes have been reported in rice. Ms-np is a male-sterile mutant derived from a spontaneous mutation. The filaments of the mutant are long and thin, and the withered anthers are white and transparent. Ms-np was confirmed to be a none-pollen type mutant of male sterility, for no pollen grains were stained with I2-KI solution and the anther locules were always hollow. Genetic analysis of five F2 populations and two BC1F1 populations revealed that the mutation was controlled by a single recessive gene. To uncover the molecular basis of ms-np, the F2 population derived form the cross of ms-np/M63 was used for genetic mapping. Screening of 227 F2 mutant individuals with simple sequence repeat (SSR) markers indicated that ms-np(t) was located between the molecular markers RM541 and RM343, on chromosome 6, with the distances of 15.2 and 7.9 cM, respectively. The results provide a basis for further gene cloning and understanding of the molecular mechanism underlying rice male fertility.

Key words: Rice, Male sterility, Genetic analysis, Mapping

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