Chinese Journal OF Rice Science

Chinese Journal of Rice Science

• 研究简报 • Previous Articles     Next Articles

Hybrid Rice Resistant to Bacterial Blight Developed by Marker Assisted Selection

CAO Li-yong; ZHUANG Jie-yun; ZHAN Xiao-deng; ZHENG Kang-le; CHENG Shi-hua *   

  1. (Chinese National Center for Rice Improvement; Key Laboratory for Rice Biology; Ministry of Agriculture; P. R. China; China National Rice Research Institute; Hangzhou 310006; China; *Corresponding author)
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-04-10 Published:2003-04-10

抗白叶枯病杂交水稻的分子标记辅助育种

曹立勇; 庄杰云; 占小登; 郑康乐; 程式华*   

  1. 中国水稻研究所 国家水稻改良中心， 农业部水稻生物学重点实验室， 浙江 杭州 310006

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Abstract: Through recurrent backcrossing in combination with molecular marker assisted selection (MAS), restorer lines R8006 and R1176 carrying Xa-21, a gene having broad spectrum resistance to bacterial blight, were selected. By crossing the two lines to CMS line Zhong 9A, two new hybrid rice combinations, Zhongyou 6 and Zhongyou 1176 were developed. The hybrids showed high resistance to diseases, good grain quality and high yielding potential in national and provincial adaptability and yield trials.

Key words: marker assisted selection, hybrid rice, bacterial blight, disease resistance

摘要： 应用分子标记辅助回交，育成了带广谱抗白叶枯病基因[i]Xa-21[/i]的两个杂交水稻恢复系R8006和R1176，所配的杂交水稻组合中优6号、中优1176在中国南方稻区及多个省级区试中表现抗病、优质、高产，具有较广的商业开发潜力。

关键词: 分子标记辅助育种, 杂交水稻, 白叶枯病