AI Article Synopsis
- Soybean is a crucial vegetable protein source, and while breeders have improved yields, the genetic factors influencing yield and important traits remain unclear.
- A study created a large soybean population with 5,600 inbred lines, analyzing various traits across 22 environments, which led to the identification of significant marker-trait associations for different characteristics including yield and seed mass.
- The findings showed that elite founder parents contributed more positive yield alleles compared to exotic founders, but also highlighted the potential benefits of incorporating unique genetic traits from exotic sources into US soybean breeding programs.
Article Abstract
Soybean is the world's leading source of vegetable protein and demand for its seed continues to grow. Breeders have successfully increased soybean yield, but the genetic architecture of yield and key agronomic traits is poorly understood. We developed a 40-mating soybean nested association mapping (NAM) population of 5,600 inbred lines that were characterized by single nucleotide polymorphism (SNP) markers and six agronomic traits in field trials in 22 environments. Analysis of the yield, agronomic, and SNP data revealed 23 significant marker-trait associations for yield, 19 for maturity, 15 for plant height, 17 for plant lodging, and 29 for seed mass. A higher frequency of estimated positive yield alleles was evident from elite founder parents than from exotic founders, although unique desirable alleles from the exotic group were identified, demonstrating the value of expanding the genetic base of US soybean breeding.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6169381 | PMC |
| http://dx.doi.org/10.1534/g3.118.200332 | DOI Listing |
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