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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (12): 233-237.

所属专题： 生物技术； 农业生态

• 植物保护 农药 • 上一篇    下一篇

24个单基因系对黑龙江省优势菌群的抗性及联合抗病性分析

张国民,马军韬,肖佳雷,刘迎雪,辛爱华,任洋   

  • 收稿日期:2010-01-05 修回日期:2010-02-27 出版日期:2010-06-20 发布日期:2010-06-20
  • 基金资助:

    黑龙江省基金重点项目

The blast resistance of 24 monogenic rice lines to prevalence physiologic races of Heilongjiang and analysis of pathogenicity association

Zhang Guomin, Ma Juntao, Xiao Jialei, Liu Yingxue, Xin Aihua, Ren Yang   

  • Received:2010-01-05 Revised:2010-02-27 Online:2010-06-20 Published:2010-06-20

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摘要：

为了明确24个抗稻瘟病基因在黑龙江省的抗性水平及其利用价值，将2006年黑龙江省优势菌株和强致病力菌株接种于以丽江新团黑谷为轮回亲本培育而成的含有24个抗瘟单基因系上。结果表明：水稻抗瘟基因Pi9(t)、pi-z5对优势和强致病力菌株抗性最强，是较好的抗源可以广泛的利用；对2个抗瘟基因的联合抗病性系数分析，结果表明基因两两搭配后的联合抗病系数最高、联合致病系数最低的组合是pi-9(t)*pi-z5 和pi-9(t)*pi-ta2 ；分析得出，黑龙江省稻瘟病菌致病力较强，大部分抗瘟基因都已失去抗性，急需引进新的抗瘟基因。

关键词: 小麦, 小麦, 遗传转化, 分子育种

Abstract:

In order to realization the blast resistance of 24 monogenic rice lines to prevalence physiologic races of Heilongjiang and utilization value, the prevalence and high virulence races of Magnaporthe grisea from Heilongjiang in 2006 were inoculated on 24 monogenic rice lines which the transmigration parent was LTH. The results showed that,the blast resistance genes Pi9(t) and pi-z5 had maximum resistance for prevalence and high virulence races of Magnaporthe grisea and could extensive utilization.According to the analysis of resistance association coefficient (RAC),the combination of two genes had maximum RAC.The lowest parts of virulence association coefficient were pi-9(t)*pi-z5 and pi-9(t)*pi-ta2. The virulence of Magnaporthe grisea was stronger and most of blast resistance genes losed resistance.We must import new blast resistance genes to resist the situation.