|本期目录/Table of Contents|

[1]周玲,熊威,胡俏强,等.基于温带和热带玉米群体全基因组选择和杂种优势候选位点的鉴定[J].江苏农业科学,2021,49(4):19-26.
 Zhou Ling,et al.Genome selection and identification of candidate sites for heterosis based on temperate and tropical maize populations[J].Jiangsu Agricultural Sciences,2021,49(4):19-26.
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基于温带和热带玉米群体全基因组选择
和杂种优势候选位点的鉴定
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第49卷
期数:
2021年第4期
页码:
19-26
栏目:
生物技术
出版日期:
2021-02-20

文章信息/Info

Title:
Genome selection and identification of candidate sites for heterosis based on temperate and tropical maize populations
作者:
周玲1熊威1胡俏强2戴惠学2赵涵1
1.江苏省农业科学院/江苏省农业生物学重点实验室,江苏南京 210014;2.南京市蔬菜科学研究所,江苏南京 210042
Author(s):
Zhou Linget al
关键词:
温热带玉米全基因组选择杂种优势关联分析候选位点
Keywords:
-
分类号:
S513.032
DOI:
-
文献标志码:
A
摘要:
基于187份种质资源材料的全基因组重测序数据开发了120 583个高质量SNP变异位点,通过这些位点可以将具有不同遗传背景的187份玉米种质划分为两大类群,分别为包含100份材料的温带亚群和包含87份材料的热带亚群。通过对温带和热带玉米群体选择信号的遗传分化分析,检测到3 664个受到选择的位点。选取187份材料中已报道能在温/热亚群形成杂种优势的135份代表性自交系,其中75份来自温带玉米自交系,60份为热带玉米系,基于两大杂种优势群进行杂种优势性状的全基因组关联分析(GWAS),结果鉴定出2 407个杂种优势候选位点不均匀分布在玉米10条染色体上。整合选择信号检测和GWAS分析结果,共识别出1 153个受到选择的杂种优势相关位点,其中,619个位点与26个已报道的杂种优势相关QTLs一致。功能注释发现与候选位点紧密连锁的324个候选基因大部分都具有功能,其中包含61个重要的转录因子。根据GO富集分析发现这些候选基因主要参与了很多对杂种优势形成有贡献的关键生化代谢途径,包括氮化合物代谢、叶酸代谢、糖酵解、发育过程的负调控及转录调控等重要生物学途径。
Abstract:
-

参考文献/References:

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相似文献/References:

[1]王亚琦,孙子淇,郑峥,等.作物分子标记辅助选择育种的现状与展望[J].江苏农业科学,2018,46(05):6.
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备注/Memo

备注/Memo:
收稿日期:2020-12-01
基金项目:国家重点研发计划(编号:2017YFD0102005);江苏省农业科技自主创新资金[编号:CX(20)1002]。
作者简介:周玲(1987—),女,安徽合肥人,博士,副研究员,从事玉米遗传育种学研究。 E-mail:zlingxiaoyao@163.com。
通信作者:赵涵,博士,研究员,从事玉米遗传育种学研究。 E-mail :zhaohan@jaas.ac.cn。
更新日期/Last Update: 2021-02-20