湘资3150微效抗瘟性基因鉴定  

Identification of minor genes for rice blast resistance in Xiangzi 3150

作　　者：黄红梅[1,2] 肖应辉[3] 黄玲[3] 奉光平[1] 燕玮婷[1] 戴良英[1] 王国梁[3] 刘二明[1] 

机构地区：[1]湖南农业大学生物安全科学技术学院,长沙410128 [2]湖南农业大学生物科学技术学院,长沙410128 [3]湖南农业大学农学院,长沙410128

出　　处：《植物病理学报》2011年第5期509-515,共7页Acta Phytopathologica Sinica

基　　金：湖南省教育厅资助科研项目(06A029);公益性行业(农业)科研专项(200803008);NSFC项目(30871335)

摘　　要：以湘资3150和CO39为亲本建立F10重组自交系群体为材料,在桃江病圃应用自然诱发接种法对群体的田间叶瘟抗性表现进行了分析。结果表明,在LOD 2.5的域值上,共检测到14个有效的微效基因QTL位点(LOD值均大于2.5),分别位于水稻第3、8和10染色体上,其表型变异贡献值差异比较大,介于11.78%～40.57%之间;表明可能控制不同抗性表型的QTL紧密连锁或者同一个QTL对不同的抗性表型均具有抗性贡献。A total of 286 recombinant inbred lines（RILs） and their parents,CO39 and Xiangzi 3150,were inoculated with Magnaporthe oryzae by natural inoculation for evaluation of rice field leaf-blast resistance in the blast nursery at Taojiang county.The results showed that 14 QTLs were detected in the regions exceeding 2.5 LOD.These QTLs were mapped on chromosome 3,8 and 10 respectively;accounting for 11.78%-40.57% of the phenotypic variance.QTLs responsible for different field resistance traits were tightly linked each other,or the individual putative QTL contributed simultaneously to different field resistance traits vari-ation.

关 键 词：水稻 稻瘟病菌 湘资3150 微效基因 

分 类 号：S432.23[农业科学—植物病理学]