Quantitative trait loci for agronomic traits in soybean

Reference Report for RGB20110824.4

Title:	Quantitative trait loci for agronomic traits in soybean
Authors:	Panthee, D., Pantalone, V., Saxton, A., West, D., Sams, C.
Source:	Plant Breed. 2007, 126(1):51-57
Abstract:	There continues to be improvement in seed yields of soybean by conventional breeding, but molecular techniques may provide faster genetic gains. The objective of this study was to identify quantitative trait loci (QTL) associated with the agronomic traits seed yield, lodging, plant height, seed filling period and plant maturity in soybean. To achieve this objective, 101 F6-derived recombinant inbred lines (RIL) from a population developed from a cross of N87-984-16 ‡ TN93-99 were used. Experiments were conducted in six environments during 2002Ü2003. Heritability estimates on an entry mean basis from data combined across environments ranged from 0.12 to 0.65 for seed yield and seed filling period, respectively. Composite interval mapping detected one QTL for yield (near Satt076), two for lodging (near Satt225 and Satt593) and four for maturity (near Satt263, Satt292, Satt293 and Satt591) in this population. Additional environmentally sensitive QTL for these traits, and for seed filling period and plant height are also reported. The QTL associated with agronomic traits that we report and the recently released germplasm (PI 636460) from this population may be useful in soybean breeding programmes.

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