Identification of genetic loci associated with crude protein and mineral concentrations in alfalfa (Medicago sativa) using association mapping

文献类型： 外文期刊

第一作者： Jia, Congjun

作者： Jia, Congjun;Chen, Min;Liu, Xiqiang;Gong, Pan;Wang, Xuemin;Gao, Hongwen;Wang, Zan;Wu, Xinming;Wang, Yunqi;Xu, Qingfang

作者机构：

关键词： Alfalfa;Association mapping;Crude protein;Mineral elements;Simple sequence repeat (SSR)

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2017 年 17 卷

页码：

收录情况： SCI

摘要： Background: Alfalfa (Medicago sativa) is one of the most important legume forage species in China and many other countries of the world. It provides a quality source of proteins and minerals to animals. Genetic underpinnings for these important traits, however, are elusive. An alfalfa (M. sativa) association mapping study for six traits, namely crude protein (CP), rumen undegraded protein (RUP), and four mineral elements (Ca, K, Mg and P), was conducted in three consecutive years using a large collection encompassing 336 genotypes genotyped with 85 simple sequence repeat (SSR) markers. Results: All the traits were significantly influenced by genotype, environment, and genotype x environment interaction. Eight-five significant associations (P < 0.005) were identified. Among these, five associations with Ca were repeatedly observed and six co-localized associations were identified. Conclusions: The identified marker alleles significantly associated with the traits provided important information for understanding genetic controls of alfalfa quality. The markers could be used in assisting selection for the individual traits in breeding populations for developing new alfalfa cultivars.

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