一粒小麦抗白粉病和条锈病基因的分析
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S512.1 S435.121.4

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国家重点基础研究发展计划(973计划)


Gene Analysis of Resistance to Wheat Powdery Mildew and Stripe Rust in Einkorn Accessions
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    摘要:

    一粒小麦是普通小麦抗性改良的宝贵资源.本研究对24份一粒小麦分别进行了白粉病和条锈病混合菌种苗期接种鉴定,进一步分别用一套白粉病菌菌株(15个)对2份乌拉尔图小麦和条锈病菌小种(21个)对1份栽培一粒小麦进行接种鉴定,其中乌拉尔图小麦UR206能抵抗所有供试白粉菌菌株,UR204除对白粉菌菌株E11感病外,对其余菌株表现抗性;栽培一粒小麦MO205对不同条锈菌小种表现出不同的抗性反应,研究表明乌拉尔图小麦UR206、UR204和栽培一粒小麦MO205分别含有与已知抗白粉病和抗条锈病基因不同的新基因.对乌拉尔图小麦UR204、UR206和栽培一粒小麦MO205分别进行抗白粉和条锈病基因的遗传分析,结果表明乌拉尔图小麦UR204和UR206分别含有一对显性抗白粉病基因,栽培一粒小麦MO205含有两对独立遗传的显性抗条锈病基因.

    Abstract:

    Einkorn is the valuable genetic resource for improvement of resistance in hexaploid wheat(Triticum aestivum L.).Reaction of 24 Einkorn accessions to mixed inoculum of powdery mildew and stripe rust,and two T.urartu accessions UR204,UR206 and a T.monococcum accession MO205 were used for reaction to a set of 15 differential Blumeria graminis tritici isolates and 21 differential Puccinia striiformis isolates,respectively.Among them,UR206 was resistant to all 15 isolates,UR204 was resistant to 14 isolates except E11,and MO205 showed different resistant types.The results indicated that most likely UR206 and UR204 carried new powdery mildew resistance genes that were different from 18 known Pm genes and MO205 carried new stripe rust gene(s) that were different from 24 known Yr genes.UR204 and UR206 and MO205 were genetically analyzed for resistance to powdery mildew and stripe rust,and it was identified that each of two T.urartu accessions carried a dominant gene and MO205 carried two independent dominant genes,respectively.

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邱永春,周荣华,孔秀英,等.一粒小麦抗白粉病和条锈病基因的分析[J].植物遗传资源学报,2005,(4):400-404,408.

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  • 收稿日期:2005-06-01
  • 最后修改日期:2005-09-02
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