Abstract
Soybean [Glycine max (L.) Merr.] provides oil and protein for fuel, food, and feed around the world. The limited genetic diversity of domesticated soybean threatens future yield and limits breeders' ability to optimize the nutrient composition of soybean. Glycine soja (L.) Merr. is a wild relative of soybean that is substantially more genetically and phenotypically diverse than domesticated soybean. Breeding advances have overcome many of the challenges of breeding with G. soja. Genomics and publicly available marker data facilitated the identification of a genetically diverse core set from the USDA G. soja germplasm collection and allowed the identification of progeny that capture the valuable genetic diversity present in the wild germplasm. Valuable seed composition traits have been identified among wild soybean accessions. We extend these observations to include the seed ionome of 84 wild soybean accessions. Measurement of the concentrations of 19 elements from wild soybean seeds and 13 G. max accessions from multiple environments show that 17 of the element levels have a range of heritabilities and are substantially influenced by the environment. The average concentrations of many elements were higher in the wild soybean than domesticated soybean and also varied among maturity groups. Genetic markers potentially associated with improved mineral composition of Glycine seed have also been identified. This variation may be sufficient to improve mineral content of soy meal. Notably, S concentrations were higher in G. soja, and S levels correlate with total protein levels and S‐containing amino acids. These observations may be used by breeders to improve seed composition of soybean.
Highlights
Soybean [Glycine max (L.) Merr.] provides oil and protein for fuel, food, and feed around the world
Song et al (2015) identified a collection of 81 wild soybean accessions that represent most of the single nucleotide polymorphism (SNP) marker diversity in the G. soja USDA germplasm collection, and the list of accessions was provided by the USDA-ARS Soybean Genomics Improvement Laboratory
The goal of this research is to measure the variability of 19 ions among genetically diverse G. soja accessions, to determine the heritability of each ion across multiple environments to assess the potential for genetically improving seed mineral composition, and to determine if S levels are correlated with improved content of S-containing amino acids
Summary
Soybean [Glycine max (L.) Merr.] provides oil and protein for fuel, food, and feed around the world. Marker analyses indicated that most of the inherent diversity in the wild parent was captured by a set of 17 progeny Phenotypic analyses of these lines indicated that desirable seed composition traits, such as higher protein levels and increased levels of S-containing amino acids, were inherited from the wild parent. A subset of the collection of 81 diverse wild soybean provide the basis for these analyses and will be referred to as the core collection Detailed phenotyping of these accessions suggests that there is substantial variation for valuable seed composition traits (La et al, 2019). The goal of this research is to measure the variability of 19 ions among genetically diverse G. soja accessions, to determine the heritability of each ion across multiple environments to assess the potential for genetically improving seed mineral composition, and to determine if S levels are correlated with improved content of S-containing amino acids
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
