文献类型：期刊文章

作　　者：刘桂富[1,2] 杨剑[1] 徐海明[1] 朱军[1]

机构地区：[1]浙江大学农业与生物技术学院,生物信息研究所,杭州310029 [2]华南农业大学农学院

出　　处：《Journal of Genetics and Genomics》

年　　份：2007

卷　　号：34

期　　号：7

起止页码：608-615

语　　种：中文

收录情况：AJ、BDHX、BDHX2004、BIOSISPREVIEWS、CAB、CAS、CSA-PROQEUST、CSCD、CSCD2011_2012、EBSCO、EMBASE、IC、JST、PUBMED、SCI、SCIE、SCOPUS、WOS、ZGKJHX、ZR、核心刊

摘　　要：QTLs for heading date of rice （Oryza sativa L.） with additive, epistatic, and QTL × environment （QE） interaction effects were studied using a mixed-model-based composite interval mapping （MCIM） method and a double haploid （DH） population derived from IR64/Azucena in two crop seasons. Fourteen QTLs conferring heading date in rice, which were distributed on ten chromosomes except for chromosomes 5 and 9, were detected. Among these QTLs, eight had single-locus effects, five pairs had double-locus interaction effects, and two single-loci and one pair of double-loci showed QTL × environment interaction effects. All predicted values of QTL effects varied from 1.179 days to 2.549 days, with corresponding contribution ratios of 1.04%-4.84%. On the basis of the effects of the QTLs, the total genetic effects on rice heading date for the two parents and the two superior lines were predicted, and the putative reasons for discrepancies between predicted values and observed values, and the genetic potentiality in the DH population for improvement of heading date were discussed. These results are in agreement with previous results for heading date in rice, and the results provide further information, which indicate that both epistasis and QE interaction are important genetic basis for determining heading date in rice.

关 键 词：quantitative trait locus （QTL）  EPISTASIS QTL ×environment interaction  heading date  rice （Oryza sativa L.）  

分 类 号：S511]