NEIGAE OpenIR
Genotyping of Soybean Cultivars With Medium-Density Array Reveals the Population Structure and QTNs Underlying Maturity and Seed Traits
Y. Y. Wang, Y. Q. Li, H. Y. Wu, B. Hu, J. J. Zheng, H. Zhai, S. X. Lv, X. L. Liu, X. Chen, H. M. Qiu, J. Y. Yang, C. M. Zong, D. Z. Han, Z. X. Wen, D. C. Wang and Z. J. Xia
2018
发表期刊Frontiers in Plant Science
卷号9
摘要Soybean was domesticated about 5,000 to 6,000 years ago in China. Although genotyping technologies such as genotyping by sequencing (GBS) and high-density array are available, it is convenient and economical to genotype cultivars or populations using medium-density SNP array in genetic study as well as in molecular breeding. In this study, 235 cultivars, collected from China, Japan, USA, Canada and some other countries, were genotyped using SoySNP8k iSelect BeadChip with 7,189 single nucleotide polymorphisms (SNPs). In total, 4,471 polymorphic SNP markers were used to analyze population structure and perform genome-wide association study (GWAS). The most likely K value was 7, indicating this population can be divided into 7 subpopulations, which is well in accordance with the geographic origins of cultivars or accession studied. The LD decay rate was estimated at 184 kb, where r2 dropped to half of its maximum value (0.205). GWAS using FarmCPU detected a stable quantitative trait nucleotide (QTN) for hilum color and seed color, which is consistent with the known loci or genes. Although no universal QTNs for flowering time and maturity were identified across all environments, a total of 30 consistent QTNs were detected for flowering time (R1) or maturity (R7 and R8) on 16 chromosomes, most of them were corresponding to known El to E4 genes or QTL region reported in SoyBase (soybase.org). Of 16 consistent QTNs for protein and oil contents, 11 QTNs were detected having antagonistic effects on protein and oil content, while 4 QTNs soly for oil content, and one QTN soly for protein content. The information gained in this study demonstrated that the usefulness of the medium density SNP array in genotyping for genetic study and molecular breeding.
文献类型期刊论文
条目标识符http://ir.iga.ac.cn/handle/131322/9170
专题中国科学院东北地理与农业生态研究所
作者单位中国科学院东北地理与农业生态研究所
推荐引用方式
GB/T 7714
Y. Y. Wang, Y. Q. Li, H. Y. Wu, B. Hu, J. J. Zheng, H. Zhai, S. X. Lv, X. L. Liu, X. Chen, H. M. Qiu, J. Y. Yang, C. M. Zong, D. Z. Han, Z. X. Wen, D. C. Wang and Z. J. Xia. Genotyping of Soybean Cultivars With Medium-Density Array Reveals the Population Structure and QTNs Underlying Maturity and Seed Traits[J]. Frontiers in Plant Science,2018,9.
APA Y. Y. Wang, Y. Q. Li, H. Y. Wu, B. Hu, J. J. Zheng, H. Zhai, S. X. Lv, X. L. Liu, X. Chen, H. M. Qiu, J. Y. Yang, C. M. Zong, D. Z. Han, Z. X. Wen, D. C. Wang and Z. J. Xia.(2018).Genotyping of Soybean Cultivars With Medium-Density Array Reveals the Population Structure and QTNs Underlying Maturity and Seed Traits.Frontiers in Plant Science,9.
MLA Y. Y. Wang, Y. Q. Li, H. Y. Wu, B. Hu, J. J. Zheng, H. Zhai, S. X. Lv, X. L. Liu, X. Chen, H. M. Qiu, J. Y. Yang, C. M. Zong, D. Z. Han, Z. X. Wen, D. C. Wang and Z. J. Xia."Genotyping of Soybean Cultivars With Medium-Density Array Reveals the Population Structure and QTNs Underlying Maturity and Seed Traits".Frontiers in Plant Science 9(2018).
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