中国水稻科学

• 研究报告 • 上一篇    下一篇

水稻恢复系C224对条纹叶枯病的抗性遗传模型分析

郑文静1,2,刘志恒1,*,张燕之2,刘欣3,王昌华2,赵家铭2   

  1. 1沈阳农业大学 植物保护学院, 辽宁 沈阳 110161; 2辽宁省稻作研究所, 辽宁 沈阳 110101; 3沈阳农业大学 生物技术学院, 辽宁沈阳 110161; *通讯联系人, E-mail: lzhh1954@163.com
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-05-10 发布日期:2010-05-10

Analysis of Genetic Model for Rice Stripe Disease Resistance in Rice Restorer Line C224

ZHENG Wen-jing1,2, LIU Zhi-heng1,*, ZHANG Yan-zhi2, LIU Xin3, WANG Chang-hua2, ZHAO Jia-ming2   

  1. 1 College of Plant Protection, Shenyang Agricultural University, Shenyang 110161, China; 2 Liaoning Rice Research Institute, Shenyang 110101, China; 3 College of Biological Technology, Shenyang Agricultural University, Shenyang 110161, China; *Corresponding author, E-mail: lzhh1954@163.com
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-05-10 Published:2010-05-10

摘要: 应用植物数量性状“主基因+多基因混合遗传模型”方法分析了C224对条纹叶枯病抗性的遗传效应,并考查了C224与7个保持系组配的杂交组合对条纹叶枯病的抗性。结果表明,C224对条纹叶枯病的抗性遗传符合2对加性显性上位性主基因+加性显性多基因的混合遗传模型(E1),两对主基因的加性效应分别为-12.47和-24.75,均呈负向显性,上位性和互作效应明显;主基因的遗传率为92.12%,多基因遗传率为2.74%,抗性遗传存在明显的主基因效应。在C224与7个保持系组配的杂交组合中,有5个组合对条纹叶枯病的抗性达到高抗或中抗水平。

关键词: 水稻, 条纹叶枯病抗性, 遗传模型

Abstract:

Resistance inheritance to rice stripe disease of C224 were analyzed by the mixed major gene plus polygene mixed genetic model of quantitative traits. Meanwhile, the resistances of seven crosses derived from C224 and seven maintainer lines were investigated. The results showed that rice stripe disease resistance of the rice restorer line C224 was controlled by two major genes with additivedominanceepistatic effects plus polygene with additivedominance effects(E1 model). These two major genes showed different additive effects and negative dominance effects. One major gene′s additive effect was about -12.47 and the other was -24.75. There were significant epistatic and interactive effects between the two major genes. The heritability of the two major genes was about 92.12%, while the heritability of polygene was about 2.74%. The resistance to rice stripe disease had a significant major gene effect in the seven crosses. Of the seven crosses five possessed high or medium rice stripe disease resistance.

Key words: rice, rice stripe disease resistance, genetic model, restorer line