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vol.19 número3Genetic progress of the peach breeding program of Embrapa over 16 yearsGenetic variability revealed by microsatellite markers in a germplasm collection of Jatropha curcas L. in Brazil: an important plant for biofuels índice de autoresíndice de assuntospesquisa de artigos
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Crop Breeding and Applied Biotechnology

versão impressa ISSN 1518-7853versão On-line ISSN 1984-7033

Resumo

GUIMARAES, Rejane Araújo et al. Assessing genetic diversity and population structure in a Dipteryx alata germplasm collection utilizing microsatellite markers. Crop Breed. Appl. Biotechnol. [online]. 2019, vol.19, n.3, pp.329-336.  Epub 31-Out-2019. ISSN 1518-7853.  https://doi.org/10.1590/1984-70332019v19n3a45.

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 (θ p = 0.097) suggests moderate genetic structuring and high genetic differentiation among progenies (θ s = 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.

Palavras-chave : Baru; cerrado; ex situ conservation; effective size; genetic resources.

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