畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (11): 2104-2110.doi: 10.11843/j.issn.0366-6964.2015.11.025

• 研究简报 • 上一篇    下一篇

鸡肝重和颜色的全基因组连锁分析

孙艳发1,2,赵桂苹2,刘冉冉2,郑麦青2,刘丽2,李鹏2,文杰2*   

  1. (1.龙岩学院生命科学学院,龙岩 364012; 2.中国农业科学院北京畜牧兽医研究所,北京 100193)
  • 收稿日期:2015-04-01 出版日期:2015-11-23 发布日期:2015-11-23
  • 通讯作者: 文杰,研究员,主要从事家禽育种研究,E-mail:wenj@caas.net.cn
  • 作者简介:孙艳发(1981-),男,黑龙江人,博士,主要从事家禽营养与育种研究,E-mail:boysun2010@163.com
  • 基金资助:

    农业产业技术体系项目(nycytx-42);龙岩学院博士科研启动基金项目(LB2013008)

Genome-wide Linkage Analysis for Liver Weight and Color in Chicken

SUN Yan-fa1,2,ZHAO Gui-ping2,LIU Ran-ran2,ZHENG Mai-qing2,LIU Li2,LI Peng2,WEN Jie2*   

  1. (1.College of Life Science,Longyan University,Longyan 364012,China;2.Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
  • Received:2015-04-01 Online:2015-11-23 Published:2015-11-23

摘要:

旨在揭示鸡肝重和颜色的遗传基础和分子机制,本研究以中国农业科学院(CAAS)鸡F2资源群体和遗传图谱为基础,测定300只F2代个体93日龄的肝重、肝率以及肝颜色亮度值(L*)、红度值(a*)、黄度值(b*),进行这些性状的全基因组连锁分析。结果表明,本研究共检测到影响肝重和颜色5个性状的11个QTLs,解释了这些性状3.39%~6.43%的表型变异;在GGA5上22 cM、GGA12上56 cM和GGA15上1 cM共检测到影响肝重和肝率3个QTLs;在6条染色体上共检测到8个影响肝颜色的QTLs。其中GGA15上的2个QTLs,14 cM区间(16~30 cM)影响鸡肝L*和b*;GGA1上的2个QTLs,6 cM区间(81~87 cM)影响肝颜色a*和b*。这些QTLs的发现为鸡肝重和颜色的精细定位和分子标记辅助选择奠定基础。

Abstract:

To reveal the genetic basis and molecular mechanism of liver weight and color in chicken,5 traits,including liver weight,percentage of liver weight to carcass weight and liver color(lightness L*,redness a* and yellowness b*) were measured from 300 93-day-old F2 generation chickens from Chinese Academy of Agricultural Sciences(CAAS) chicken F2 resource population.Genome-wide linkage analysis for the liver weight and color traits were preformed on the basis of the CAAS chicken F2 resource population and genetic linkage map.The results of the present study showed that 11 quantitative trait loci(QTLs) for 5 traits were found,which explained 3.39%-6.43% of the phenotypic variation.A total of 3 QTLs on 3 chicken(Gallus gallus) chromosomes,at 22 cM on chicken chromosome 5(GGA5),56 cM on GGA12 and 1 cM on GGA15,for liver weight and the percentage of liver weight to carcass weight were identified.A total of 8 QTLs for liver color were found on 6 chicken chromosomes.Two interesting QTL regions for liver color were found,one region spanned 14 cM(16-30 cM) on GGA15 containing 2 QTLs for the chicken liver L* and b*,and the other region spanned 6 cM(81-87 cM) on GGA1 containing 2 QTLs for the chicken liver a* and b*.The present study provides the basis for further fine mapping and molecular marker-assisted selection for liver weight and color traits in chicken.

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