甜高粱(Sorghum bicolor L.Beauv)茎秆相关性状遗传分析
Molecular Plant Breeding(2017)
Abstract
以粒用高粱品种忻粱52(P1)和甜高粱品种W452 (P2)杂交构建的F2∶3代群体为试材,对甜高粱的糖锤度、出汁率及茎叶鲜重百分比进行了主-多基因遗传模型的研究.研究表明:忻粱52×W452组合中糖锤度和出汁率均表现为2对主基因+多基因遗传,主基因和多基因分别服从加性-显性效应,显性效应大于加性效应,主基因的遗传效率分别为72.79%和87.69%,多基因的遗传效率分别为3.02%和2.79%;茎叶鲜重百分比的遗传模式为2对主基因+多基因遗传,主基因为加性-显性-上位性模型,多基因服从加性-显性-上位性模型,控制茎叶鲜重百分比的加性效应大于显性效应,主基因的遗传效率为45.33%,多基因的遗传效率为6.98%.
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