Assessement of Genetic Diversity of Native Pumelo (Citrus maxima Merr) by Utilizing SSR Markers

Genetic diversity of 29 accessions included 10 native pumelo varieties in Vietnam was analyzed by using 35 SSR markers. The results showed that 3.29 alleles per SSR loci, PIC value range from 0.0 to 0.82, with average is 0.45. All grapefruit accessions showed heterozygosity from 35.26 % to 51.61 %. Genetic distance was determined using Jaccards similarity coefficient and final dendrogram construction using a UPGMA which revealed that 29 accessions were divided into the 8 distinguished heterotic groups with genetic similarity from 0.32 to 1.0. The results also showed that There were 2 varieties Dien and Bang Luan, in which, between accessions have had no difference on 35 loci. In other varieties, a narrow genetic different within and among accessions in a variety suggesting for germplasm fingerprinting, preeminent selection and proper utilization should be further done via breeding programs.