中国水稻科学

中国水稻科学

• 研究报告 •    下一篇

水稻白叶枯病(Xanthomonas campestris pv．oryzae)抗性遗传研究:II．水稻品种对五个菌系的抗性遗传分析

章 琦；施爱农；王春莲；阙更生   

  1. 中国农业科学院作物育种栽培研究所，北京100081
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1990-03-17 发布日期:1990-03-17

Genetics of Resistance to Bacterial Blight (Xanthomonas campestris pv. oryzae) in Five Rice Cultivars

Zhang Qi; Shi Ainong; Wang Chunlian; Que Gengsheng   

  • Received:1900-01-01 Revised:1900-01-01 Online:1990-03-17 Published:1990-03-17

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摘要： 研究了5个水稻品种邳早l5、蚌珠芒、南粳l5、中百4号和青华矮6号对3个水稻白叶枯病菌系的抗性遗传和抗性基因等位关系。这5个品种分别与感病品种沈农lO33杂交，对各组合的F1、F2和B1F1群体的抗性测试表明：邳早l5和蚌珠芒由一对显性基因控制其抗性。南粳l5和中百4号均由两对连锁的显性基因控制，交换值为30％。等位性测定表明，邳早15和蚌珠芒的一对显性基因与Xa-3等位，南粳l5和中百4号也均有一对显性基因与Xa-3等位；青华矮6号的一对不完全显性基因与Xa-3是等位的。

关键词: 水稻, 白叶枯病, 抗性, 等位测定, 基因

Abstract: The inheritance and allelic relationships of genes resistant to three strains of Xantnomonas campestris pv. orvzae in five rice cultivars Pei-Zao 15. Bang-Zhu-Mang, Nan-Geng 15, Zhong-Bai 4, and Qing-Hua-Ai 6, were studied. The analysis of F1, F2 and B1 F2 populations from the crosses of the five cultivars with susceptible cultivar, Sheng-Nong 1033. It was concluded that resistance in Pei-Zao 15 and Bang-Zhu-Mang is under a single dominant gene controlling the 3 strains at booting stage. Both Nan-Geng 15 and Zhong-Bai 4 have two linked dominant genes with crossover value 30% operating in the 3 strains at booting stage. Qing-Hua-Ai 6 is under a single incomplete dominant gene controlling the 3 strains at all growth stages. Allelic tests with known genes for resistance indicate that the dominant gene expressing resistance in adult Pei-Zao 15 and Bang-Zhu-Mang is Xα-3. One of the two dominant genes in Nan-Geng 15 and Zhong-Bei 4 is Xα-3, too. Qing-Hua-Ai 6 has an allelic gene at the Xα-4 locus.

Key words: Bacterial blight of rice, Resistance, Allelic test, Gene