摘要
早熟性是作物育种的重要目标性状之一。以‘鲁棉研28号’和‘X1570’为亲本配制F1组合及其F2:3世代分离群体。利用‘鲁棉研28号’、‘X1570’、‘鲁棉研28号’בX1570’F1及F2:3群体进行多世代联合分析,以探究陆地棉现蕾期和开花期两个生育期相关性状的遗传规律。结果表明,现蕾期符合加性-显性-上位性多基因遗传模型,受多基因控制,且遗传率达85.00%;开花期符合1对显性主基因+加性-显性多基因的混合遗传模型,主基因和多基因的遗传率分别为87.69%和9.37%。主基因和多基因的加性效应值分别为2.543 1和3.419 6。相关系数分析表明,现蕾期、开花期都与棉花的果枝类型呈极显著相关。本研究结果可为现蕾期和开花期的QTL作图、长江流域棉花早熟育种工作提供一定的理论依据。
Early maturity is one of the key breeding targets in crop. In this study, ’Lumianyan28’ and ’X1570’ were hybridized to obtain the F1 and also F2:3 generation segregation population. The genetic mechanism of squaring and flowering time that both associated with growth period trait for upland cotton was analyzed by joint analysis of multiple generations in four generations(’Lumianyan28’×’X1570’, F1 and F2:3). The results showed that the squaring time was fitted by a genetic model corresponding to additive-dominant-epistatic polygenes. It was controlled by Polygenes, and the polygenes heritability were 85.00%. Flowering time was fitted by a model corresponding to mixed one completely dominant major-gene and additive-dominant polygenes in which the heritability of majorgene, polygenes were 87.69% and 9.37%, and the additive effect of major-gene, polygenes were 2.543 1 and 3.419 6 respectively. The correlation coefficient analysis showed that squaring and flowering time were significantly correlated with branch type(p<0.01). The results of this study not only provided the theoretical basis for the QTL mapping in squaring and flowering time but also cotton breeding for early maturity in Yangtze valley.
作者
冯常辉
张友昌
王孝刚
张教海
夏松波
韩光明
别墅
秦鸿德
Feng Changhui;Zhang Youchang;Wang Xiaogang;Zhang Jiaohai;Xia Songbo;Han Guangming;Bie Shu;Qin Hongde(Institute of Cash Crops,Hubei Academy of Agricultural Sciences,Wuhan,430070)
出处
《分子植物育种》
CAS
CSCD
北大核心
2020年第14期4747-4753,共7页
Molecular Plant Breeding
基金
湖北省农业科技创新中心项目(2019-620-000-001-06)
棉花生物学国家重点实验室开放课题(CB2016A07)共同资助。
关键词
生育期
遗传模型
主基因
多基因
早熟性
Growth period
Genetic model
Major-gene
Polygenes
Early maturity
