小麦品种纹枯病抗性遗传的初步研究  被引量:16

A preliminary study on inheritance of the resistance to sharp eyespot in wheat

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作  者:刘朝晖[1] 张旭[1] 李浩兵[1] 姚景侠[1] 

机构地区:[1]江苏省农业科学院遗传生理研究所,南京210014

出  处:《南京农业大学学报》1999年第3期5-8,共4页Journal of Nanjing Agricultural University

基  金:国家 "九五"攻关项目

摘  要:以病级为指标, 对 4 个杂交组合正反交 F1 进行了抗病性调查, 发现正反交 F1 之间无显著性差异, 表明纹枯病抗性遗传属于核遗传。同时调查 5 对杂交组合 F2 群体的纹枯病抗性, F2 植株比例都不符合质量性状的遗传特征。运用王建康和盖钧镒设计的主多基因混合遗传模型分离世代分析方法, 以及亲本、 F1 和 F2 方差分析方法, 分析 5 个杂交组合的纹枯病抗性遗传, 结果其至少受 10~13 对主基因和一些微效多基因的共同控制, 且遗传率在 3169% ~5709% 。The inheritance of resistance to sharp eyespot in wheat was investigated.The result showed that no significant difference was found between F 1′s resistance in reciprocal cross by using t test,and the resistance was inherited through cell nucleus,without any effect from cytoplasm.Segregating ratios of plants in F 2 populations of five crosses indicated that the resistance was a quantitative not qualitative trait.By using single generation analysis based on major gene and ploygene mixed model provided by Wang and Gai(1997),and another method based on the variance of parents,F 1,F 2 to analyzed the data of five crosses,it could be concluded that there were at least 1 0 1 3 major genes with some polygenes controlling the inheritance of resistance,with broad heritability ranged from 31 69% to 59 09%.

关 键 词:纹枯病抗性 遗传 核遗传 数量性状 小麦 

分 类 号:S512.103.4[农业科学—作物学]

 

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