河南农业大学学报2018，Vol.52Issue(1)：6-10,5.
玉米穗上节间数的QTL分析
QTL analysis of the internodes above the upmost ear in maize
摘要
Abstract
In the present study,a set of 166 recombinant inbred lines that derived from the elite hybrid Nongda108 and the corresponding IF2population were used for QTL mapping. The plant materials were planted in Zhengzhou and Anyang over 2013 and 2014. The IAEs data of the two segregation popula-tions were collected for QTL identification using composite interval mapping (CIM). The IF2popula-tion was of more IAEs than the RIL population,which indicates that this trait is of significant heterosis in maize. In QTL mapping,a total of 14 QTL were detected for IAEs in the two populations,6 QTL for the RIL population and 8 QTL for IF2population. These QTL distributed on Chromosomes 1,3,5,6, and 8 in maize genome. In RIL population, qIAEs1a and qIAEs1b were detected in multiple environ-ments and environmental-joint QTL analyzes with the contributions rate above 12%. In IF2population, qIAEs6b and qIAEs3 were also detected in multiple environments and environmental-joint QTL map-ping,but qIAEs3 was of small contributionrate to IAEs. Between the two populations,no identify QTL was identified,which suggests that maize inbred lines and hybrid were of different genetic mechanisms underlying the IAEs. And, the identified QTL in IF2not only consists of gene effects, but also the genes interactions. The major QTL mentioned above in the corresponding populations probable contain the major genes for regulating the plant architecture. And,these QTL can be used to identify candidate genes for IAEs and screen idea plant architecture.关键词
玉米/穗上节间数/RILs/IF2群体/QTL分析Key words
maize/internodes above the ear/RILs/IF2/quantitative trait locus(QTL)分类
农业科技引用本文复制引用
陈德芝,郭战勇,谢惠玲,石超男,张战辉..玉米穗上节间数的QTL分析[J].河南农业大学学报,2018,52(1):6-10,5.基金项目
河南省科技计划项目(142300410020) （142300410020）
