Mapping quantitative trait loci for tissue culture response in VCS3M-DH population of Brassica rapa |
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Authors: | Mi-Suk Seo Mina Jin Soo-Seong Lee Soo-Jin Kwon Jeong-Hwan Mun Beom-Seok Park Richard G F Visser Guusje Bonnema Seong-Han Sohn |
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Institution: | 1. Department of Agricultural Biotechnology, National Academy of Agricultural Science, Rural Development Administration, 150 Suin-ro, Gwonseon-gu, Suwon, 441-707, Korea 3. Laboratory of Plant Breeding, Wageningen University, Droevendaalsesteeg 1, Wageningen, The Netherlands 2. BioBreeding Institute, Business Incubation, Chung-Ang University, Ansung, Gyounggi, Korea
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Abstract: | Key message Quantitative trait loci (QTL) controlling callus induction and plant regeneration were identified in the VCS3M-DH population of Brassica rapa. Abstract Quantitative trait loci (QTL) controlling callus induction and plant regeneration were identified in the VCS3M-DH population of Brassica rapa. The VCS3M-DH population showed wide and continuous variation in callus induction and shoot regeneration. Significant coefficient correlations were detected between these two parameters. Broad-sense heritability (h 2) for the two traits was around 0.7, indicating genetic regulation of regeneration ability in this population. In the composite interval mapping analysis, two QTLs for callus induction ability, qCi2 and qCi7, were mapped on chromosome A02 and A07, explaining 28.6 % of phenotypic variation. For plant regeneration, four QTLs, qPr6-1 qPr6-2, qPr7, and qPr9 were identified on chromosome A06, A07, and A09, which in total explained 50.1 % of phenotypic variation. Furthermore, 15 putative candidate genes were found on the interval of the six QTLs, which were related to various plant hormones, MADS-box genes, and serine/threonine related genes. These results provide important information to identify genes related to tissue culture ability in B. rapa. |
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