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Mapping quantitative trait loci ( QTL s) underlying seed vitamin E content in soybean with main, epistatic and QTL × environment effects
Author(s) -
Li Haiyan,
Wang Yan,
Han Yingpeng,
Teng Weili,
Zhao Xue,
Li Yongguang,
Li Wenbin
Publication year - 2016
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12346
Subject(s) - quantitative trait locus , biology , epistasis , cultivar , inbred strain , population , tocopherol , allele , food science , vitamin e , genetics , agronomy , gene , antioxidant , biochemistry , demography , sociology
Soybean ( G lycine max ( L .) M err.) seed contains small amounts of tocopherol, a non‐enzymatic antioxidant known as lipid‐soluble vitamin E ( VE ). Dietary VE contributes to a decreased risk of chronic diseases in humans and has several beneficial effects on resistance to stress in plants, and increasing VE content is an important breeding goal for increasing the nutritional value of soybean. In this study, quantitative trait loci ( QTL s) underlying VE content with main, epistatic and QTL × environment effects were identified in a population of F 5 : 6 recombinant inbred lines from a cross between ‘ H efeng 25’ (a low‐ VE cultivar) and ‘ OAC Bayfield’ (a high‐ VE cultivar). A total of 18 QTL s were detected that showed additive main effects ( a ) and/or additive × environment interaction effects ( ae ) in different environments. Moreover, 19 epistatic pairs of QTL s were found to be associated with α ‐tocopherol ( α ‐Toc), γ ‐tocopherol ( γ ‐Toc), δ ‐tocopherol ( δ ‐Toc) and total VE ( TE ) contents. The QTL s identified in multienvironments could provide more information about QTL by environment interactions and could be useful for the marker‐assistant selection of soybean cultivars with high seed VE contents.