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Identification of quantitative trait loci underlying soybean ( Glycine max ) 100‐seed weight under different levels of phosphorus fertilizer application
Author(s) -
Wu Depeng,
Li Chunxia,
Jing Yan,
Wang Jun,
Zhao Xue,
Han Yingpeng
Publication year - 2020
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.12850
Subject(s) - quantitative trait locus , biology , trait , phosphorus , population , inbred strain , glycine , fertilizer , agronomy , genetics , gene , chemistry , amino acid , demography , organic chemistry , sociology , computer science , programming language
The “100‐seed weight (100‐SW)” trait is an important component of soybean quality and yield. Phosphorus (P) deficiency induces a wide array of metabolic effects that limits plant growth, especially in soybean. In this study, the 100‐SW values of a recombinant inbred line (RIL) population constructed by a cross between “Zhongdou27” and “Jiunong20” were evaluated in three tested environments under regular P and low P level conditions. We detected 12 additive quantitative trait loci (QTL) on nine linkage groups, explaining 8.11%–17.21% of the total phenotype variations. Two of these identified QTLs, qSW2‐3 and qSW17‐2, were identified in multi‐environments both under regular and low P level conditions, and explained 10.10%–14.11% and 10.12%–12.06% of the observed variations, respectively. One QTL, qSW17‐2, was novel which has been reported for the first time. Additionally, three QTLs (qSW10‐1, qSW13‐1 and qSW17‐1) were detected under low P conditions and the other QTLs were detected specifically under regular P levels. These particular QTLs improve our understanding of the genetic basis of P efficiency in soybean.