Evaluating the genetic potential of Hevea genetic resources originating from the state of Rondonia in Brazil conserved in Vietnam

Abstract

This study aimed to evaluate the genetic potential of Hevea genetic resources originating from the state of Rondonia in Brazil which have been conserved in Vietnam for effective and sustainable use. Based on 15 SSR markers, the level of high genetic diversity in all 14 groups of varieties from the state of Rondonia (Brazil) included in the assessment of agronomic characteristics in field trials with the average number of alleles (Na) ranged from 12 to 12.9, and the average expected heterozygosity (He) was 0.77; the genetic variance mainly occurred within accessions with 74% of the total genetic variability. Besides, the wild genetic resources from the state of Rondonia (Brazil) exhibited vigorous growth, but the variation was low (17%), while the latex productivity was low but the variation was high (90%). Rondonia population with the best growth and latex yield of accessions was independent of the number of the groups; the best vigorous growth and latex yield accessions derived from three groups including RO/A/7, RO/C/9, and RO/JP/3; the best vigorous growth accessions belonged to RO/C/8 group.