Use of the QTL approach to the study of soybean trait relationships in two populations of recombinant inbred lines at the F7 and F8 generations

Reference Report for RGB20110902.2

Title:	Use of the QTL approach to the study of soybean trait relationships in two populations of recombinant inbred lines at the F7 and F8 generations
Authors:	Vieira, A., de Oliveira, A., Soares, T., Schuster, I., Piovesan, N., Martinez, C., de Barros, E., Moreira, M.
Source:	Braz. J. Pl. Phys. 2006, 18(2):281-290
Abstract:	This work aimed to identify the quantitative trait loci (QTL) associated with photosynthesis and growth and productivity traits of soybean and to study possible associations between these traits by the analysis of coincidence of QTL in linkage groups (LGs). Thus, populations of recombinant inbred lines (RILs) of the F7 and F8 generations derived from the cross between the varieties BARC-8 and Garimpo were used. The traits evaluated were net assimilation rate of CO2 under saturating light (Asat), potential photosynthesis rate (Pmax), leaf area (A), specific leaf area (SLA), specific leaf nitrogen (N); root (WR), nodule (WN), stem (WST), leaf (WL), pod (WP) and plant dry mass (WT); nodule (nN), seed (ns), and pod number (nP); seed fresh mass per plant (WS), one-hundred seed fresh mass (WHS) and seed protein percentage (P%). It was possible to identify the following QTL associated with the following soybean traits: SLA, Asat, N, WR, WST, WL, WT, WP, WHS, ns and nP, indicating that the RIL population has a great potential for mapping loci associated with quantitative traits of the soybean crop. The correlations between the soybean traits were partially confirmed by coincidence of QTL.

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