香料烟青枯病抗性基因的遗传分析  

Genetic Analysis on Resistance to Bacterial Wilt in Oriental Tobacco

作　　者：高加明[1,2] 王志德[1] 张兴伟[1] 刘艳华[1] 牟建民[1] 任民[1] 徐军[1,2] 

机构地区：[1]农业部烟草类作物质量控制重点实验室,中国农业科学院烟草研究所,青岛266101 [2]中国农业科学院研究生院,北京100081

出　　处：《中国烟草科学》2010年第1期1-4,共4页Chinese Tobacco Science

基　　金：国家烟草专卖局专项“中国烟草种质资源平台建设”(国烟办综[2005]501号)

摘　　要：本研究以香料烟青枯病抗病品种Xanthi、感病品种Samsun、F1以及F2群体为研究材料,采用青枯病圃进行抗性鉴定,利用主基因+多基因混合遗传模型对各群体单株的病情指数进行分析,结果表明:香料烟青枯病抗性基因是受2对加性-显性-上位主基因+加性-显性多基因(E-1模型)控制遗传;主基因的遗传率为49.63%。In this paper, bacterial wilt resistant variety Xanthi and susceptible variety Samsun, their F1s and F2s were used to study inheritance of resistance of oriental tobacco to bacterial wilt. These populations and their individuals were planted in identifying field of Fujian Province. The identified data of individuals was analyzed using major gene plus poly-gene mixed inheritance model. Results indicated that the resistance to bacterial wilt in oriental tobacco was controlled by two independent major genes with additive-dominance-epistatic effects plus polygenes with additive-dominance effects （the E-1 model）. Heritability value of the major genes reached 49.63%.

关 键 词：香料烟 青枯病 主基因+多基因混合遗传模型 数量性状 

分 类 号：S572.034[农业科学—烟草工业]