Acer pentaphyllum is rare and endangered plant endemic to Sichuan Province
China. This species is only distributed in the arid valley area of the upper and middle reaches of Yalong River. Exploring its genetic diversity characteristics can provide a theoretical basis for the protection and utilization of its genetic resources. In the paper
genetic diversity and genetic structure of 5 Acer pentaphyllum Diels populations from Sichuan (total about 44 individuals) were analyzed by ISSR (inter simple sequence repeat) markers. Eight highly stable and repeatable ISSR primers were used to detect a total of 38 loci
of which 35 were polymorphic sites (90.21% of the total). At the species level
the Shannon index (I) was 0.3924
Neis gene diversity index (He) was 0.2498
the coefficient of gene differentiation (Gst) was 0.3722
and the gene flow (Nm) was 0.8433. The software Popgen 32 analysis of the results showed that the genetic variation mainly existed in the population. At the population Level
I and He were 0.2125 and 0.1456
respectively. All of these results showed that Muli
Sanyagong and Kangdiing population had higher levels of genetic diversity
while Yajiang and Luomo had lower genetic diversity. The mantel analysis showed no significant correlation between genetic distance and geographic distance.