Assessing genetic diversity and population structure in a Dipteryx alata germplasm collection utilizing microsatellite markers
Rejane Araújo Guimarães, Kássia Marques Corrêa Miranda, Elias Emanuel Silva Mota, Lázaro José Chaves, Mariana Pires de Campos Telles and Thannya Nascimento Soares
Abstract: Dipteryx alata Vogel (Leguminosae) is a native Neotropical tree with a wide distribution in the Brazilian Cerrado that is commonly known as the baru tree. The genetic diversity of 150 D. alata progeny from a germplasm collection was characterized using nine microsatellite markers. Genetic diversity analysis detected 50 alleles ranging from 2 to 14 alleles per locus. The genetic differentiation among populations (ϑp = 0.097) suggests moderate genetic structuring and high genetic differentiation among progenies (ϑs = 0.169). The intrapopulation index (f = 0.122) indicates the presence of low endogamy. The effective population size (Ne = 96) shows that the germplasm collection has sufficient representativeness for use as a base population for breeding programmes. These results are useful for the exploitation of the genetic resources of D. alata for future conservation efforts and breeding programmes.