Location and transmission of QTL for multiple traits in the pedigree of soybean cultivars |
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| Authors: | Jun Qin RunQing Yang ZhangXiong Liu YongFang Zhang ChengXi Jiang WenBin Li YingHui Li RongXia Guan RuZhen Chang LiJuan Qiu |
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| Affiliation: | (1) National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Crop Germplasm Utilization, MOA, Institute of Crop Science, The Chinese Academy of Agricultural Sciences, 100081 Beijing, People’s Republic of China;(2) School of Agriculture and Biology, Shanghai Jiaotong University, 200240 Shanghai, People’s Republic of China;(3) Shijiazhuang Branch Center of National Center for Soybean Improvement, Cereal and Oil Crop Institute, Hebei Academy of Agricultural and Forestry Science, 050031 Shijiazhuang, People’s Republic of China;(4) Institute of Suihua Agricultural Sciences, Helongjiang Academy of Agriculture Science, 152052 Suihua, People’s Republic of China;(5) Chinese Education Ministry’s Key Laboratory of Soybean Biology, Soybean Research Institute, Northeast Agriculture University, 150030 Harbin, People’s Republic of China |
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| Abstract: | In silico mapping for single trait was extended to analyze many agronomic traits in the pedigree of soybean. 26 agronomic
traits were measured and 477 polymorphic markers chosen on public genetic map were genotyped on 14 inbreeding lines in the
pedigree of Suinong14. We firstly determined 6 principal components from 26 agronomic traits using the principal component
analysis and then constructed 6 “super traits” by the multiplication of the vector of the standardized original traits by
the eigenvectors corresponding to the principle components. With in silico mapping, a total of 24 markers distributing on
13 linkage groups were detected separately as QTL responsible for 6 “super traits” and of which 14 QTL performed pleiotrpy.
Tracing the transmission of functional genes in the pedigree, it was found that some genes were capable to explain the genetic
mechanism for the contribution of exotic germplasms and domestic founders to soybean cultivars in the improvement of the performance
and quality. |
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