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Acta Agron Sin ›› 2011, Vol. 37 ›› Issue (02): 249-254.doi: 10.3724/SP.J.1006.2011.00249

• CROP GENETICS & BREEDING · GERMPLASM RESOURCES · MOLECULAR GENETICS • Previous Articles     Next Articles

QTL Analysis of Oil Content Difference in Two Environments in Brassica napus L.

LI Chao1,2,3,LI Bo1,3,**,QU Cun-Min1,3,YAN Xing-Ying1,3,FU Fu-You1,3,Liu Li-Zhao1,3,CHEN Li1,3,LI Jia-Na1,3,*   

  1. 1 College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China; 2 Institute of Oil Crops, Guiyang 550006, China; 3 Chongqing Engineering Research Center for Rapeseed, Chongqing 400716, China
  • Received:2010-08-10 Revised:2010-12-01 Online:2011-02-12 Published:2010-12-20
  • Contact: 李加纳, E-mail: ljn1950@swu.edu.cn, Tel: 023-68251950

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Abstract: According to the genetic linkage map established by our laboratory and composite interval mapping (CIM), the QTLs oil content difference between two environments were detected using the recombinant inbred lines (RIL) SWU-1 and SWU-2in Brassica napus L.two QTLs of the oil content difference were located in the two linkage groups, each of the QTLs explained 10.31%–12.45% of phenotypic variation in SWU-1; three QTLs of the oil content difference were located in the two linkage groups, each of them explained 6.60%–10.58% of phenotypic variation in SWU-2. The results showed that the oil content difference of the different genotypes was quite different, ranging from 0 to 18.66% and the coefficient of variation was up to 58.24%, which means there are different environment insensitive genes for oil content in the different genotypes. There wereno visiblelinkage relationship between the QTLs of oil content difference and the QTLs of oil content in two environments, which indicated that sensitive and insensitive genes do not have the same genetic expression system as the oil synthesis genes.

Key words: Brassica napus L., Oil content, Environment, Difference QTL

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