文献类型： 外文期刊

作者： Yu, Y. T. ¹ ; Li, G. K. ¹ ; Yang, Z. L. ¹ ; Hu, J. G. ¹ ; Zheng, J. R. ¹ ; Qi, X. T. ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Crops Res Inst, Guangzhou, Guangdong, Peoples R China

关键词： Ear size;Quantitative trait locus;Space flight;Zea mays

期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）

ISSN： 1676-5680

年卷期： 2014 年 13 卷 2 期

页码：

收录情况： SCI

摘要： The development of molecular markers has contributed to progress in identifying the gene(s) responsible for favorable variations in maize studies. In this study, quantitative trait locus (QTL) mapping was conducted using simple sequence repeat markers in an F-2 sweet corn population from a cross between parental line 1132 and space flight-induced mutant line 751 to identify the loci contributing to an increase in some yield traits. A primary mutated genomic region was located on chromosome 9. In total, 26 QTL were detected for eight yield-related traits and assembled into three clusters on chromosome 9. The largest QTL cluster at bin 9.02/03, primarily contributing to >10% of the phenotypic variation in ear and cob diameters, was likely due to a major QTL. Desired alleles of these QTL were provided by the mutant line 751. The primary action of the major mutant allele was an additive effect. Another mutant locus, which was induced in bin 9.01, increased cob and ear diameters by dominant genetic action.