作物学报Issue(3)：549-556,8.DOI:10.3724/SP.J.1006.2013.00549
基于SNP标记的玉米株高及穗位高QTL定位
QTL Identification for Plant Height and Ear Height Based on SNP Mapping in Maize (Zea mays L.)
摘要
Abstract
In order to learn more about the genetic machanism of plant height and ear height, two linkage maps were constructed by SNP markers using two F2:3 families derived from K22 × CI7 and K22 × Dan340, respectively. These two maps included 429 and 344 polymorphic SNP markers respectively and their total lengths were 1 389.3 cM and 1 567.5 cM respectively. The pheno-typic data of plant height (PH) and ear height (EH) of two populations were used to detect QTLs in two environments (2010 in Nanning of Guangxi Province and 2011 in Wuhan of Hubei Province) by using the Composite Interval Mapping (CIM) model of WinQTLCart2.5. In total, 21 QTLs for plant height and 27 QTLs for ear height were identified. The phenotypic variance ex-plained by each QTL ranged from 4.9%to 17.9%. The results showed that the additive and partial dominant effects were the main genetic basis for plant height and ear height in maize in this study, and the main QTLs for PH and EH were both found on chro-mosome 7.关键词
SNP/数量性状位点(QTL)/连锁图谱/株高/穗位高/玉米Key words
SNP (single nucleotide polymorphism)/QTL (quantitative trait locus)/Linkage map/Plant height/Ear height/Zea mays引用本文复制引用
郑德波,杨小红,李建生,严建兵,张士龙,贺正华,黄益勤..基于SNP标记的玉米株高及穗位高QTL定位[J].作物学报,2013,(3):549-556,8.基金项目
本研究由国家高技术研究发展计划(863计划)项目(2010AA10A106)和湖北省农业科技创新中心项目资助 （863计划）
