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Fu You Fu,Lie Zhao Liu,You Rong Chai,Li Chen,Tao Yang,Ai Fen Ma,Cun Ming Qu,Lin Jiang,Zheng Sheng Zhang,Jia Na Li 한국유전학회 2007 Genes & Genomics Vol.29 No.3
Husk proportion (HP) and lignin content (LC) are two important traits of seed quality of B. napus. Efficient selection of these two traits is an important way to improve the seed quality in meal improvement. A set of recombinant inbred lines (RILs) of B. napus (GH06 × Zhongyou 821) was used for mapping QTLs of HP and LC in a two-year study in different environments. 509 markers (78 SSR markers, 66 RAPD markers and 365 SRAP markers) were mapped on 26 linkage groups with an average length of 73.96 cM. The map covered a total of 1923 cM, and the average distance between two adjacent markers was 3.78 cM. Analysis of variance of LC and HP indicated that. LC might not be significantly affected by environment (F = 2.96 < 3.02) and HP might be affected by genotype × environment interactions. A total of 15 significant QTLs were detected in eight linkage groups with a LOD threshold value of 2.5 (LR ≥ 11.5) by CIM, explaining 4.99-16.14% of phenotype variation. Some QTLs of LC and HP were detected in near regions of the same linkage groups, such as qLCBB05-6-1 and qLCWZ06-6-1, qLCBB05-10-2 and qLCBB06-10-1 and qLCWZ06-10-2, qHPBB05-9-3 and qHPBB06-9-1, qHPBB05-10-4 and qHPBB06-10-2 and qHPBB06-10-3 and qHPWZ06-10-1. This study indicates that the repeatedly detected QTLs of LC and HP might be major-effect QTLs of LC and HP.
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