Methods of identifying polymorphic genetic markers of a plant species linked to a phenotype of interest are described. Polymorphic markers of interest determined by association mapping, and methods of predicting plant phenotypes are further determined.本發明描述與感興趣表現型相關之作物物種的多型性基因標記的識別方法。進一步判定藉由關聯性定位判定感興趣的多型性標記以及預測作物表現型的方法。