两个烟草赤星病抗源的遗传分析  

Genetic Analysis of Resistance to Brown Spot Disease in Tobacco Cultivars Jingyehuang and Beinhart1000-1

作　　者：冯莹[1] 蒋彩虹[1] 程立锐[1] 杨爱国[1] 郑吉云 赵清海[2] 杨修峰[2] 尹华玲[3] 冯全福[1] 

机构地区：[1]烟草行业烟草基因资源利用重点实验室中国农业科学院烟草研究所,青岛266101 [2]山东潍坊烟草有限公司诸城分公司,山东诸城262200 [3]云南省烟草公司楚雄州公司双柏县分公司,云南双柏675100

出　　处：《中国烟草科学》2015年第5期1-7,共7页Chinese Tobacco Science

基　　金：公益性行业(农业)科研专项项目(201203091);中国烟草总公司科技重大专项项目[110201301009(JY-09)]

摘　　要：以高抗赤星病烟草品种净叶黄(JYH)、Beinhart1000-1(Beinhart)和感病品种NC82为材料分别构建了2个杂交组合的P1、P2、F1、F2四世代群体,成熟期赤星病菌人工接种鉴定后,采用主基因+多基因混合遗传模型对JYH和Beinhart两个材料进行抗性分析,结果表明,两者的赤星病抗性均受两对加性-完全显性主基因+加性-显性多基因控制。组合1的加性效应以第1对主基因为主,且多基因的加性效应大于显性效应;组合2的两对主基因负向加性效应相等,且多基因的显性效应大于加性效应;2个组合F2群体主基因遗传率分别为64.72%和63.88%,表明赤星病的抗性遗传以主基因效应为主,并且受环境影响较大。Tobacco cultivar/line Jingyehuang, named JYH, and Beinhart1000-1, named Beinhart, have shown effective resistance to brown spot disease. In this study, populations of P1, P2, F1, and F2 were generated as experimental materials from two crosses between the two cultivars and susceptible cultivar NC82. The joint segregation analysis method of mixed major gene plus polygene genetic model was used to investigate the inheritance of resistance to brown spot disease in tobacco. The results showed that the inheritances of both JYH and Beinhart fitted to a mix genetic model of two major genes with additive-complete dominance effects plus poly-genes with additive-dominance effects(E-5 model). For high resistance material JYH, the additive effect of the first major gene was larger than the second one. For high resistance material Beinhart, the additive effect of two major genes was equal. Heritability of the major genes was 64.72% in JYH×NC82, and 63.88% in Beinhart×NC82 in F2, indicating that resistances to brown spot disease in tobacco cultivars JYH and Beinhart were mainly controlled by major genes.

关 键 词：烟草 赤星病 主基因+多基因 遗传分析 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]