title: Genetic diversity of Annona  crassiflora (Annonaceae) in northern Minas Gerais State.
abstract: Genetic  diversity analyses of tropical tree species are relevant to landscape  management, plant genetic resource inventory, and biological conservation of  threatened species. Annona crassiflora is an endangered fruit tree  native to the Cerrado biome that is threatened by reduction of natural  populations and fruit extraction. We examined the intra- and interpopulational  genetic diversity of this species in the northern region of Minas Gerais State.  Seventy-two individuals from four natural populations were genotyped using RAPD  markers. We found moderate genetic diversity among populations, with Shannon's I index varying between 0.31 and 0.44, and Nei's genetic diversity (H(E)) for the  population set equal to 0.31. AMOVA indicated a greater genetic variation  within (77.38%) rather than among populations (22.62%), tending towards  isolation by distance (Mantel's r = 0.914; P = 0.089). Nei's genetic  identity estimates among populations revealed a hierarchical pattern of genetic  similarity of form [(CA1, CA2), MC], [(GM)], corroborating the high genetic  differentiation between spatially isolated populations.
authors.affiliation: Laboratório de Bioprospecção e Recursos Genéticos, Departamento de Biologia Geral, Universidade Estadual de Montes Claros, Montes Claros, MG, Brasil.
authors.forename: L G
authors.initials: LG
authors.lastname: Cota
authors.forename: F A
authors.initials: FA
authors.lastname: Vieira
authors.forename: A F
authors.initials: AF
authors.lastname: Melo Júnior
authors.forename: M M
authors.initials: MM
authors.lastname: Brandão
authors.forename: K N O
authors.initials: KN
authors.lastname: Santana
authors.forename: M L
authors.initials: ML
authors.lastname: Guedes
authors.forename: D A
authors.initials: DA
authors.lastname: Oliveira
mesh_terms: D031041:Annona / Q000235:genetics*; D001938:Brazil; D005819:Genetic Markers; D014644:Genetic Variation; D005838:Genotype; D010802:Phylogeny; D011110:Polymorphism, Genetic; D019105:Random Amplified Polymorphic DNA Technique
chemical_list: D005819:Genetic Markers