Co-location of seed oil content,seed hull content and seed coat color QTL in three different environments in <Emphasis Type="Italic">Brassica napus</Emphasis> L. |
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Authors: | X Y Yan J N Li F Y Fu M Y Jin L Chen L Z Liu |
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Institution: | (1) Chongqing Engineering Research Center for Rapeseed, College of Agronomy and Biotechnology, Southwest University, 216 Tiansheng Road, Beibei, Chongqing, 400716, People’s Republic of China; |
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Abstract: | Increasing seed oil content is an important breeding goal for Brassica napus L. (B. napus). The identification of quantitative trait loci (QTL) for seed oil content and related traits is important for efficient
selection of B. napus cultivars with high seed oil content. To get better knowledge on these traits, a molecular marker linkage map for B. napus was constructed with a recombinant inbred lines (RIL) population. The length of the map was 1,589 cM with 451 markers distributed
over 25 linkage groups. QTL for seed oil content, seed hull content and seed coat color in three environments were detected
by composite interval mapping (CIM) tests. Eleven QTL accounted for 5.19–13.57% of the variation for seed oil content. Twelve
QTL associated with seed hull content were identified with contribution ranging from 5.80 to 22.71% and four QTL for seed
coat color accounted for 5.23–15.99% of the variation. It is very interesting to found that co-localization between QTL for
the three traits were found on N8. These results indicated the possibility to combine favorable alleles at different QTL to
increase seed oil content, as well as to combine information about the relationship between seed oil content and other traits. |
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