Genetic diversity analysis on pineapple by SRAP markers.

Genetic diversity was analyzed in 61 accessions of pineapple using SRAP markers.35 pairs of primers were selected from 99 pairs of primers of SRAP.All materials of pineapples obtained clear fingerprints and appeared polymorphism.The polymorphism ratio of pineapples were lower,which was from 47.32% to 68.9%.The 35 pairs of SRAP informative primers generated a total of 567 sites,among which 384 (67.72%) sites were polymorphic.Similarity coefficients ranged from 0.802 7 to 0.951 0 among the 61 accessions of pineapple.The results showed that the genetic basis of pineapple collected was nearer and the 61 materials tested could be divided into 5 categories according to the Dice coefficient 0.833 0 based on UPGMA.