石颖斐,胡艳峰,代君丽,李洪连

• 1:河南农业大学植物保护学院

摘要(Abstract)：

分别构建了感病亲本温麦19同太空6号和中育6号的杂交组合F2代分离群体。禾谷孢囊线虫(Cereal cyst nematode,CCN)须水群体的致病型为一种新致病型Ha43,为了明确太空6号和中育6号对Ha43致病型的抗性遗传特点,采用主基因+多基因混合遗传模型(mixed major gene plus poly-gene inheritance model)分析法,分析了温麦19×太空6号和温麦19×中育6号杂交组合F2代群体的抗性分离情况。结果表明,太空6号和中育6号对Ha43的抗性遗传效应均表现为数量性状遗传。太空6号对Ha43的抗性遗传效应符合B-1模型,推测太空6号对CCN的抗性由2对主基因+多基因控制,主基因表现为加性-显性-上位性效应,抗性主基因遗传率为95.40%。中育6号对Ha43的抗性遗传效应符合B-2模型,推测中育6号对CCN的抗性由2对主基因+多基因控制,主基因表现为加性-显性效应,抗性主基因遗传率为90.31%。

关键词(KeyWords)： 太空6号;中育6号;禾谷孢囊线虫;Ha43须水群体;抗性遗传

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(30971899);; 国家公益性(农业)科研专项(200903040-4);; 国家高技术研究发展计划(863计划)(2012AA101105)

作者(Author): 石颖斐,胡艳峰,代君丽,李洪连

DOI: 10.16445/j.cnki.1000-2340.2015.01.013

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