Identification of quantitative trait loci underlying soybean (Glycine max) 100-seed weight under different levels of phosphorus fertilizer application.

Reference Report for RTN20220829.1

Title:	Identification of quantitative trait loci underlying soybean (Glycine max) 100-seed weight under different levels of phosphorus fertilizer application.
Authors:	Wu, D., Li, C., Jing, Y., Wang, J., Zhao, X., Han, Y.
Source:	Wu et al. (2020) Plant Breeding 00:1-10
Abstract:	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.

Funded by the USDA-ARS. Developed by the USDA-ARS SoyBase and Legume Clade Database group at the Iowa State University, Ames, IA

U.S. Public Domain