Analysis on the morphological characters and ISSR of the variant plant of Cynodon dactylon

The morphological characters and ISSR of 14 materials, including variants, control and other cultivars of Cynodon dactylon, were analyzed. The results indicated that the difference of internode length was significant between variants and the control, and the difference of internode diameter were also significant except HN016. The green period of HN015 was longest and HN010 was shortest. Ten primers were screened from 38 arbitrary primers of ISSR, 14 genomic DNA of C. dactylon materials were amplified, the results showed that the genetic similarity was from 0.585 to 0.776 between variants and the control and their genetic variability was remarkable.