Pi-ta、Pi-b基因在江苏粳稻穗颈瘟抗性育种中的价值分析  

Analysis on Breeding Value of Pi-ta,Pi-bGenes in Japonica Rice Breeding with Neck Resistance in Jiangsu

作　　者：王军[1] 杨杰[1] 杨金欢[1] 范方军[1] 朱金燕[1] 陈志德[1] 仲维功[1] 

机构地区：[1]江苏省农业科学院粮食作物研究所,国家水稻改良中心南京分中心,江苏南京210014

出　　处：《华北农学报》2012年第6期141-145,共5页Acta Agriculturae Boreali-Sinica

基　　金：江苏省农业科技自主创新资金项目(cx[10]402);国家科技支撑计划重大项目(2011BAD16B03)

摘　　要：利用稻瘟病抗性基因Pi-ta、Pi-b的功能标记对2009,2010年江苏省粳稻中间试验的部分粳稻品系进行基因型检测,结合穗颈瘟抗性结果,通过关联分析Pi-ta、Pi-b在江苏省粳稻穗颈瘟抗性中的价值。结果表明:Pi-ta、Pi-b基因与江苏省粳稻穗颈瘟的抗性呈正相关,Pi-ta基因2009,2010年的相关系数分别为0.50,0.37;Pi-b基因2009,2010年的相关系数分别为0.55,0.51;Pi-ta、Pi-b基因的联合效应与穗颈瘟抗性正相关系数分别为0.71,0.62。因此,同时携带这2个抗病基因可以大大提高江苏省粳稻穗颈瘟抗性。Functional Markers of blast resistance genes Pi-ta,Pi-b were used to detect part of Japonica rice lines in Jiangsu province intermediate experiment of 2009 and 2010 years.Combing with the blast resistance results,the value of Pi-ta,Pi-b in Jiangsu province Japonica rice neck blast resistance was analyzed by correlation analysis.The result indicated that Pi-ta and Pi-b were positively correlated with neck blast resistance of Japonica rice in Jiangsu province.The correlation coefficients of Pi-ta were 0.50 and 0.37 respectively in two years as the correlation coefficients of Pi-b were 0.55 and 0.51.The correlation coefficients of two genes joint effect were 0.71 and 0.62 respectively.Therefore,carrying both of this two resistance genes can greatly improve the resistance of Japonica rice in Jiangsu province.

关 键 词：水稻 稻瘟病 穗颈瘟 Pi-ta基因 Pi-b基因 抗病育种 

分 类 号：Q78[生物学—分子生物学] S435[农业科学—农业昆虫与害虫防治]