畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (5): 692-698.doi: 10.11843/j.issn.0366-6964.2014.05.003

• 遗传繁育 • 上一篇    下一篇

利用混合线性模型和BayesCPi进行QTL-MAS2011公共数据集的全基因组关联分析

朱波1,2,吴洋2,齐欣2,牛红2,张静静2,3,王延晖2,陈燕2,张路培2,高会江2,高雪2,李俊雅2*,孙少华1*   

  1. (1.河北农业大学动物科技学院,保定 071000; 2.中国农业科学院北京畜牧兽医研究所,北京 100193;3.吉林农业大学动物科学技术学院,长春 130118)
  • 收稿日期:2013-11-28 出版日期:2014-05-23 发布日期:2014-05-23
  • 通讯作者: 李俊雅,博士,研究员,主要从事动物遗传育种研究,E-mail:jl1@iascaas.net.cn;孙少华,博士,教授,主要从事动物遗传育种研究,E-mail:shaohuasun@sina.com
  • 作者简介:朱波(1989-),男,河南南阳人,硕士生,主要从事动物遗传育种与繁殖(数量遗传)研究,E-mail:zhubo525@126.com
  • 基金资助:

    现代农业(肉牛)产业技术体系岗位科学家(CARS-38);肉牛多品种全基因组选择关键技术(31272428)

Genome-wide Association Analyses of the 15th QTL-MAS Workshop Data Using Mixed Linear Model and BayesCPi Method

ZHU Bo1,2,WU Yang2, QI Xin2 ,NIU Hong2,ZHANG Jing-jing2,3,WANG Yan-hui2,CHEN Yan2, ZHANG Lu-pei2, GAO Hui-jiang2,GAO Xue2, LI Jun-ya2*, SUN Shao-hua1*   

  1. (1.College of Animal Science and Technology,Agricultural University of Hebei,Baoding 071000, China;2.Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193, China;3.College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118, China)
  • Received:2013-11-28 Online:2014-05-23 Published:2014-05-23

摘要:

本研究利用MTDFREML对QTL-MAS2011公共数据集的模拟性状进行方差组分估计,遗传力估计约为0.29。主成分分析显示,群体内不存在显著的群体分层现象,然后用2种模型进行全基因组关联分析研究。利用GAPIT程序包中的混合线性模型对QTL-MAS2011公共数据进行全基因组关联分析,共得到10个显著的单核苷酸(SNP)位点(P<0.05),其中,4个显著的SNPs在1号染色体上,4个显著的SNPs在3号染色体上, 2个显著的SNPs在5号染色体上。使用HAPLOVIEW软件对1~3号染色体上88个SNPs进行连锁不平衡(Linkage disequilibrium,LD)分析,确定2个QTLs(QTL1和QTL5)分别在1号和3号染色体上,2、4、5号染色体没有检测到QTL。利用BayesCPi模型进行全基因组关联分析研究,通过基因组窗口效应方差图谱确定1个QTL在1号染色体上,2个QTL在2号染色体上,1个QTL在3号染色体上。

Abstract:

In this study,the program MTDFREML was used to estimate the variance component of simulated traits in QTL-MAS2011 dataset.Heritability was figured out approximately to be 029.Principal component analysis showed that there wasn’t population stratification in population,and then the two kinds of models analysis of genome-wide association studies were used.Genome-wide association analyses of the 15th QTL-MAS workshop data using mixed linear model of GAPIT package was processed,by which ten significant single nucleotide polymorphisms were detected within the whole genome.Among them,four significant SNPs were on chromosome 1,four significant SNPs were on chromosome 3,and two SNPs were on chromosome 5.The linkage disequilibrium analysis of 88 SNPs on three chromosomes was performed by HAPLOVIEW program,two QTLs(QTL1 and QTL5) were identified on chromosome 1 and 3,respectively.No QTLs were detected on chromosome 2,4,5.Another genome-wide association study method(BayesCPi) was used.The genome-wide association study was performed using BayesCPi model through genomic window variance map,one QTL was detected on chromosome 1,and two QTLs were identified on chromosome 2,and one QTL was detected on chromosome 3.

中图分类号: