Abstract
ABSTRACTSoybean [Glycine Max (L.) Merr.] growth and yield are adversely affected by soil salinity. Identification of salinity tolerance genes that improve soybean performance in saline soils is a highly effective way to use and develop soybean genotypes with high salt tolerance. The objective of this study is to identify and confirm quantitative trait loci (QTL) associated with salt tolerance using an F2:3 mapping population derived from the cross Ozark (salt-sensitive) × Jake (salt-tolerant). This population was screened in the greenhouse for salt stress using 120 mM NaCl and evaluated for leaf scorch score (LSS), percentage of dead plants (PDP), leaf chlorophyll, and leaf chloride content, and genotyped using a SoySNP 6K chip. A major QTL on chromosome 3 was confirmed, and a minor QTL on chromosome 19 and additional single nucleotide polymorphism (SNP) markers associated with salt tolerance were found in this study. These markers, once validated, will be valuable for marker-assisted selection in a soybean breeding program.
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