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Dissecting four correlated growth period traits using a genome-wide association study approach in soybean

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Abstract

Soybean [Glycine max (L.) Merr.] is a short-day, photoperiod-sensitive crop. The vegetative growth period (V), reproductive growth period (R), whole growth period (V + R) and the ratio of growth period structure (R/V) are photoperiod traits critical to adaptability and yield in soybean. To thoroughly dissect the genetic basis of these growth period traits and their correlations, a panel of 277 soybean accessions were genotyped with a single nucleotide polymorphisms (SNPs) panel and phenotyped at three field environments over three years. A genome-wide association study found 28 SNPs on fifteen chromosomes with 33 significant marker-trait associations, eleven, eight, four and ten for V, R, V + R and R/V, respectively. Two SNPs, Map-6077 and -6502, showed pleiotropy in three and two traits, respectively. Map-6077, associated with V, R, and V + R, was a synonymous SNP of the GmMFT, a member of PEBP family that has been reported to inhibit seed germination and regulate oil content. These results provide candidate SNP markers and genes for further functional experiments to advance molecular marker-assisted breeding.

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The datasets analyzed during the current study are available in this article in Additional Tables S1 and S2.

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Abbreviations

GWAS:

Genome-wide association study

SNP:

Single nucleotide polymorphism

QTL:

Quantitative trait loci

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Acknowledgements

This research was supported by the National Key R & D Program for Crop Breeding (2020YFE0202300 and 2016YFD0100201), the Platform of National Crop Germplasm Resources of China (No. 2016-004 and 2017-004) and the Agricultural Science and Technology Innovation Program (ASTIP) of Chinese Academy of Agricultural Sciences (CAAS-ZDRW202109).

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Y-F.L., Y-H.L., S.J., and L.Q. conceived the study and jointly wrote the paper; Y-F.L. performed the GWAS, genotype data processing, population structure analysis and relative analyses. H.H. and Z.L. carried out the phenotypic evaluation; Y.M. analyzed the phenotypic data; All authors read and approved the final manuscript.

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Correspondence to Ying-hui Li or Li-juan Qiu.

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Li, Y., Li, Yh., Hong, H. et al. Dissecting four correlated growth period traits using a genome-wide association study approach in soybean. Genet Resour Crop Evol 69, 1147–1162 (2022). https://doi.org/10.1007/s10722-021-01293-3

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  • DOI: https://doi.org/10.1007/s10722-021-01293-3

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