CAJ | 학술논문

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.
이고항적성병연초품충정협황(JYH)、Beinhart1000-1(Beinhart)화감병품충NC82위재료분별구건료2개잡교조합적P1、P2、F1、F2사세대군체,성숙기적성병균인공접충감정후,채용주기인+다기인혼합유전모형대JYH화Beinhart량개재료진행항성분석,결과표명,량자적적성병항성균수량대가성-완전현성주기인+가성-현성다기인공제.조합 1 적가성효응이제1대주기인위주,차다기인적가성효응대우현성효응;조합2적량대주기인부향가성효응상등,차다기인적현성효응대우가성효응;2개조합F2군체주기인유전솔분별위64.72%화63.88%,표명적성병적항성유전이주기인효응위주,병차수배경영향교대.
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.