作物学报2011，Vol.37Issue(2)：271-279,9.DOI:10.3724/SP.J.1006.2011.00271
利用永久F2群体在不同光周期环境下定位玉米株高QTL
Detection of Quantitative Trait Loci for Plant Height in Different Photoperiod Environments Using an Immortalized F2 Population in Maize
摘要
Abstract
For studying the genetic basis of plant height in maize, an immortalized F2 population of 278 F1 crosses was constructed by intercrossing recombinant inbred lines derived from a cross between temperate and tropical inbred lines (Huangzaosi × CML288).The “immortalized F2” was evaluated for plant height in five locations with three photoperiod environments, i.e.a short day environment of Sanya in Hainan Province, long-day environments of Zhengzhou and Luoyang in Henan Province, and long-day environments of Shunyi and Changping in Beijing.Twelve QTLs for plant height were detected in different photoperiod environments using composite interval mapping.QTLs qPH1-2 and qPH4 associated with plant height were detected in all the three photoperiod environments, showing that these two QTLs might control plant height steadily in different environments.QTL qPH3 was detected for plant height and explained 32.13％ of the phenotypic variation in short day environment while could not be detected in long day environment, which indicated that the QTL qPH3 might control plant height only in short day environment.QTL qPH10-1 in the bin 10.04 region of chromosome 10 associated with plant height was detected in long day environments of Henan and Beijing and explained 25.39％ and 39.58％ of the phenotypic variation, respectively.This result indicated that the QTL qPH10-1 might be a major QTL for plant height in long day environment.关键词
永久F2群体/光周期/热带玉米/株高/QTL引用本文复制引用
王翠玲,孙朝辉,库丽霞,王铁固,陈彦惠..利用永久F2群体在不同光周期环境下定位玉米株高QTL[J].作物学报,2011,37(2):271-279,9.基金项目
本研究由国家自然科学基金项目(30571167和30971789)资助. （30571167和30971789）
