RAPD analysis based identification of Dichondra repensgermplasm resources

RAPD molecular markers were used to detect the genetic diversity among 16 materials of Dichondra repens with 22 primers which were selected from 100 random primers. The results indicated that there were 246 polymorphic loci out of totally 269 loci and the polymorphic rate was 91.45%. Genetic distance of D. repens was calculated by Nei method and it ranged from 0.0336 to 0.6097. The RAPD dendrogram suggested that 16 materials of D. repens could be divided into 3 groups at 0.74 of genetic distance, which could screen the excellent materials out and it was similar with the result of landscape evaluation.