作物学报2017，Vol.43Issue(5)：678-690,13.DOI:10.3724/SP.J.1006.2017.00678
玉米开花期性状的QTL及杂种优势位点定位
Mapping of QTLs and Heterotic Loci for Flowering Time-related Traits in Maize
摘要
Abstract
Flowering is an important trait in maize evolution and adaptation. Dissecting the genetic basis of heterosis of flowering will promote the selection for elite hybrids adapted to different ecosystems. In this study, a panel of 203 single segment substitution lines (SSSLs) and its testcross population derived from an elite inbred line Xu 178 as recipient parent and inbred line Zong 3 as donor parent, were applied for mapping flowering time-related traits in maize. Flowering time-related traits, including days to anthesis (DTA), days to silk (DTA) and anthesis-to-silking interval (ASI), were scored in the two populations at three locations in two years. A total of 40 quantitative trait loci (QTLs) and 37 heterosis loci (HLs) for flowering-related traits were detected. Of them, six QTLs and four HLs were detected at the three locations simultaneously. Of all detected chromosomal regions, there were 11 regions in which the genes affected both flowering time-related QTLs and HLs.关键词
玉米/单片段代换系/开花期/QTL/杂种优势Key words
Maize/Single segment substitution line/Flowering time/QTL/Heterosis引用本文复制引用
杨慧丽,林亚楠,张怀胜,卫晓轶,丁冬,薛亚东..玉米开花期性状的QTL及杂种优势位点定位[J].作物学报,2017,43(5):678-690,13.基金项目
本研究由国家自然科学基金项目(31271732)和国家重大基础研究发展计划(973计划)项目(2014CB138203)资助. This study was supported by the National Natural Science Foundation of China (31271732) and the National Key Basic Research Program (2014CB138203). （31271732）
