QTL analysis of kernel shape and weight using recombinant inbred lines in wheat |
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| Authors: | Xian-Yin Sun Ke Wu Yan Zhao Fan-Mei Kong Guan-Zhu Han Hong-Ming Jiang Xing-Jiao Huang Rui-Jun Li Hong-Gang Wang Si-Shen Li |
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| Institution: | (1) National Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai’an, 271018, People’s Republic of China;(2) Tai’an Academy of Agricultural Science, Tai’an, 271000, People’s Republic of China;(3) Yantai Academy of Agricultural Science, Yantai, 265500, People’s Republic of China;(4) Heze Academy of Agricultural Science, Heze, 274000, People’s Republic of China;(5) Present address: College of Life Science, Shandong Normal University, Jinan, 250014, People’s Republic of China |
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| Abstract: | Quantitative trait locus (QTL) analysis of kernel shape and weight in common wheat was conducted using a set of 131 recombinant
inbred lines (RIL) derived from ‘Chuan 35050’ × ‘Shannong 483’. The RIL and their two parental genotypes were evaluated for
kernel length (KL), kernel width (KW), thousand-kernel weight (TKW), and test weight (TW) in four different environments.
Twenty QTL were located on 12 chromosomes, 1A, 1B, 1D, 2A, 2B, 3B, 4A, 4B, 5D, 6A, 6B, and 7B, with single QTL in different
environments explaining 5.9–26.4% of the phenotypic variation. Six, three, four, and seven QTL were detected for KL, KW, TKW,
and TW, respectively. The additive effects for 17 QTL were positive with Chuan 35050 increasing the QTL effects, whereas the
remaining three QTL were negative with Shannong 483 increasing the effects. Eight QTL (40%) were detected in two or more environments.
Two QTL clusters relating to KW, TKW, and TW were located on chromosomes 2A and 5D, and the co-located QTL on chromosome 6A
involved a QTL for KW found in two environments and a QTL for TKW detected in four environments. |
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| Keywords: | Wheat Quantitative trait locus Recombinant inbred line |
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