摘要
研究了5个水稻品种邳早15、蚌珠芒、南粳15、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1033杂交,对各组合的F_1、F_2和B_1F_1群体的抗性测试表明:邳早15和蚌珠芒由一对显性基因控制其抗性。南粳15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Xα-3等位,南粳15和中百4号也均有一对显性基因与Xα-3等位;青华矮6号的一对不完全显性基因与Xα-4是等位的。
The inheritance and allelic relationships of genes resistant to three strains of Xantnomonas campestris pv. orvzae in five rice cultivars Pei Zau 15. Bang-Zhu-Mang, Nan-Geng 15, Zhong-Bai 4, and Qing-Hua-Ai 6, were studied. The analysis of F_1, F_2 and B_1 F_2 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 X_α-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.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1990年第1期1-8,共8页
Chinese Journal of Rice Science
关键词
水稻
白叶枯病
品种抗性
抗性遗传
Bacterial blight of rice
Resistance
Allelic test
Gene
