Rice Science

RICE SCIENCE ›› 2011, Vol. 18 ›› Issue (1): 67-70 .

• 研究简报 • 上一篇    下一篇

Genetic Analysis and Gene Mapping of Short Root Mutant Rice ksr1

NING Yong-qiang, DING Wo-na, ZHU Shi-hua, YU Hang-wei, YU Hang, LU Kai-xing   

  1. Laboratory of Plant Molecular Biology, Ningbo University, Ningbo 315211, China
  • 收稿日期:2010-06-28 修回日期:2010-10-22 出版日期:2011-03-28 发布日期:2011-07-11
  • 通讯作者: ZHU Shi-hua
  • 基金资助:

    the Science and Technology Development of Zhejiang Province, China (Grant No. Z306401), the Science and Technology Foundation of Ningbo, China (Grant No. 2008A610070), and Wong Kuancheng Education Foundation.

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摘要： A short root mutant ksr1 with the Kasalath background was isolated from an EMS-mutagenized population in rice. The root length of 6-day-old ksr1 seedlings was only about 20% of the wild type. Genetic analysis indicated that the short root phenotype of ksr1 was controlled by a recessive mutation in a single nuclear-encoded gene. To map the ksr1 mutation, an F2 population was generated by crossing the ksr1 mutant with Nipponbare. The KSR1 locus was linked to the SSR marker RM1223 on rice chromosome 4. Eight new SSR markers and two InDel markers were developed around this marker. KSR1 gene was further mapped to a 155 kb region, flanked by the InDel marker 4-24725K and the SSR marker RM17182.

关键词: rice, short root, gene mapping, molecular marker