Skip to main content
Figure 4 | BMC Genomics

Figure 4

From: Identification of candidate genes and molecular markers for heat-induced brown discoloration of seed coats in cowpea [Vigna unguiculata (L.) Walp]

Figure 4

Marker-trait association of the Hbs-3 locus. A marker-trait association of the Hbs-3 locus was analyzed using thirteen cowpea genotypes which differ in their response to heat-induced browning of seed coats phenotype. IT93K-503-1, IT84S-2246, IT93K-2046, TVu-4552 and TVx-3236, TVu-53 and TVu-15315 were positive for the heat-induced browning phenotype and are referred to as Hbs. TVu-14676, CB5, CB27, CB46, 524B and Bambey 21 are negative for the heat-induced browning phenotype and are referred to as hbs. The Hbs-3 locus spanned from 36.00 cM to 37.96 cM on the cowpea consensus genetic map linkage group 1. SNP marker 1_0640 alleles co-segregated with the positive (Hbs) and negative (hbs) genotypes. The Hbs-3 positive genotypes were associated with the adenine nucleotide (color-coded green) while the hbs-3 negative genotypes were associated with the guanine nucleotide (color-coded red). The adenine/guanine SNP in marker 1_0640 is position 348 of cowpea unigene 2077, which was annotated as a 60S ribosomal protein and can be viewed in HarvEST:Cowpea.

Back to article page