Association analysis of agronomically important traits using SSR, SAMPL and AFLP markers in bread wheat

摘要

In bread wheat, marker-trait associations were studied for 14 agronomic traits using a set of 519 DNA-based molecular markers (derived from 20 SSR, 2 SAMPL and 8 AFLP primer pairs) with a set of 55 elite wheat genotypes. Using simple linear and multiple regres-sions, each of the 14 traits was regressed on all 519 available polymorphic markers (221 SSR markers, 43 SAMPL markers and 255 AFLP markers). A total of 131 SSR, 43 SAMPL and 166 AFLP markers gave signi-ficant associations with at least one ofthe 14 traits, either with linear or with multiple regression; 51 of these markers showed association using both approaches (linear and multiple regressions), and therefore may prove useful for marker-assisted breeding after necessary validation.