Genetic mapping of leaf-related traits in autotetraploid alfalfa (Medicago sativa L.)

文献类型： 外文期刊

第一作者： He, Fei

作者： He, Fei;Kang, Junmei;Zhang, Fan;Long, Ruicai;Wang, Zhen;Zhang, Tiejun;Yang, Qingchuan;Yu, Long-Xi;Zhao, Zhongxiang

作者机构：

关键词： Alfalfa; Leaf length; Leaf width; Leaf area; Quantitative trait loci

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN： 1380-3743

年卷期： 2019 年 39 卷 11 期

页码：

收录情况： SCI

摘要： Understanding the genetic architecture of leaf-related traits is important for improving alfalfa yield. Leaf size has a great influence on the protein content and yield for alfalfa. In this study, a low-yielding precocious alfalfa individual (paternal parent) and a high-yielding late-maturing alfalfa individual (maternal parent) were used to build a hybrid F-1 population of 149 individuals. The linkage map was constructed using simple sequence repeat and single nucleotide polymorphism markers, and quantitative trait loci (QTL) for leaf length, leaf width, and leaf area were mapped using 3 years phenotypic data. We identified a total of 60 QTLs associated with leaf size. These QTLs were located on chromosomes 1 to 8, and the percent of phenotypic variation explained by QTL ranged from 2.97% to 18.78%. There were 13 QTLs explain more than 10% of phenotypic variation, most of which represent novel loci controlling leaf traits that have not been found in previous studies. The nearest markers of QTL may be used in marker-assisted selection and breeding alfalfa new varieties with high yield.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序