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Genome-wide association study reveals marker–trait associations for major agronomic traits in proso millet (Panicum miliaceum L.)

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Relation http://oar.icrisat.org/12836/
https://link.springer.com/article/10.1007/s00425-024-04465-4
https://doi.org/10.1007/s00425-024-04465-4
 
Title Genome-wide association study reveals marker–trait associations for major agronomic traits in proso millet (Panicum miliaceum L.)
 
Creator Khound, R
Rajput, S G
Schnable, J C
Vetriventhan, M
Santra, D K
 
Subject Millets
Climate Resilient Technologies
Genetics and Genomics
 
Description Proso millet (Panicum miliaceum L.) is an ancient grain recognized for its excellent water-use efficiency and short growing season. It is an indispensable part of the winter wheat-based dryland cropping system in the High Plains of the USA. Its grains are endowed with high nutritional and health-promoting properties, making it increasingly popular in the global market for healthy grains. There is a dearth of genomic resources in proso millet for developing molecular tools to complement conventional breeding for developing high-yielding varieties. Genome-wide association study (GWAS) is a widely used method to dissect the genetics of complex traits. In this pilot study of the first-ever GWAS in the US proso millet, 71 globally diverse genotypes of 109 the US proso millet core collection were evaluated for five major morpho-agronomic traits at two locations in western Nebraska, and GWAS was conducted to identify single nucleotide polymorphisms (SNPs) associated with these traits. Analysis of variance showed that there was a significant difference among the genotypes, and all five traits were also found to be highly correlated with each other. Sequence reads from genotyping-by-sequencing (GBS) were used to identify 11,147 high-quality bi-allelic SNPs. Population structure analysis with those SNPs showed stratification within the core collection. The GWAS identified twenty marker–trait associations (MTAs) for the five traits. Twenty-nine putative candidate genes associated with the five traits were also identified. These genomic regions can be used to develop genetic markers for marker-assisted selection in proso millet breeding.
 
Publisher Springer
 
Date 2024-07-04
 
Type Article
PeerReviewed
 
Identifier Khound, R and Rajput, S G and Schnable, J C and Vetriventhan, M and Santra, D K (2024) Genome-wide association study reveals marker–trait associations for major agronomic traits in proso millet (Panicum miliaceum L.). Planta (TSI), 260. ISSN 0032-0935