›› 2010, Vol. 12 ›› Issue (1): 100-105.DOI: 10.3969/j.issn.1008-0864.2010.

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Applications of Pi-z、Pi-ta2 Genes in Japonica Rice Breeding with Blast Resistance |in Yunnan

ZHANG Xue-tang, LIAO Xin-hua, ZHU Zhen-hua, SU Zhen-xi, SHI Rong, ZHAO Guo-zhen, JIANG Cong, DAI Lu-yuan   

  • Received:2009-10-16 Revised:2009-11-26 Online:2010-02-15 Published:2010-02-02

Pi-z、Pi-ta2等基因在云南粳稻稻瘟病抗性育种中的应用

张学堂,廖新华,朱振华,苏振喜,世荣,赵国珍,蒋聪,戴陆园   

  1. (Japonica Rice Breeding Center, Yunnan Academy of Agricultural Sciences, Kunming 650205, China)
  • 通讯作者: 戴陆园,研究员,主要从事遗传育种研究。E-mail:luyuandai@yahoo.com.cn
  • 作者简介:张学堂,助理研究员,硕士,从事水稻抗病育种工作。
  • 基金资助:

    云南省“十一 五”科技攻关项目(2006NG04)资助。

Abstract:

Japan strains was used as standard varieties and resistance identification method was synchronized with breeding, the performance of Pi-z, Pi-ta2 genes was analyzed  in blast resistant rice breeding in Yunnan from 2002 to 2007. The result showed that till 2007 Pi-ta2, Pi-z and Pi-zt genes were still of utilization value in rice producing reigns of Yunan, and resistance of Pi-ta2 had distinct inconformity between leaf resistance and spike resistance to blast, while the other two had the same performance. Pi-z had more obvious effect in improving resistance of breeding materials in different resistant breeding combinations.

Key words: japonica rice, rice blast, Pi-z, Pi-ta2, resistance breeding

摘要:

采用与育种同步的抗性鉴定方法,利用日本鉴别菌系作为鉴别标准品种,分析了Pi-z、Pi-ta2等基因2002-2007年在云南水稻稻瘟病抗性育种实践中的表现。结果表明,截至2007年,Pi-z、Pi-ta2 、Pi-zt在云南稻区仍然有利用价值; Pi-ta2叶/穗瘟抗性反应表现明显不一致;Pi-z、Pi-zt在各种育种材料中叶/穗瘟抗性表现一致;在不同抗性组合中,发现Pi-z对育种材料的抗性改良效果更明显。

关键词: 粳稻;稻瘟病;Pi-z,Pi-ta2;抗性育种

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