ANALYZING GENETIC DIVERSITY OF ACACIA ORASSICARPA LINES SELECTED IN THE CENTRAL AND SOUTHERN CENTRAL REGIONS OF VIETNAM BY MICROSATELLITE MARKERS

Abstract

        Using 14 SSR markers for analyzing genetic diversity of Acacia orassicarpa lines at different regions has obtained a total number of 52 different alleles (with the mean of 3.71 alleles per locus). There are 42 polymorphic alleles (80.77%) and 10 monomorphic alleles (19.23%). PIC value changes from 0.63 to 0.87 (with the mean of 0.71). Genetic similarity coefficient among Acacia orassicarpa lines is from 0.63 to 0.98 (with the mean of 0.81). Based on genetic relationships, 53 lines have been divided into 8 different groups: group I includes 27 lines, derived from Thua Thien - Hue; group II consists of 1 line; group III consists of 2 lines derived from Ha Tinh; group IV has

3 lines from Quang Binh; group V consists of 15 lines; group VI has 2 lines collected from Quang Nam; group VII includes 2 lines from Quang Nam; group VIII has only 1 line. The results have shown that genetic diversity among individuals was low. This may occur because the studied individuals have the same close origin or are selected from asexual propagation process, so the fluctuation is not much.