【Objective】SSR molecular marker technique was used to identify purity of watermelon hybrid seeds,aiming to provide a reliable indoor method for purity identification of hybrid seeds.【Method】Seeds of watermelon hybrid combination T-1and its parents(P-1,M-13)were selected in this study.DNA was extracted with CTAB method in cotyledon and optimized with SSR molecular marker method.SSR identification results were compared with field identification.【Result】Three pairs of primers,which were stability,repeatability...