Optimizing sampling efforts for ex situ conservation of genetic variability of <it>Dipteryx alata</it> Vogel by Melo Dayane B, Diniz-Filho José Alexandre F, Oliveira Guilherme, Santana Ludmilla L, Soares Thannya N, Chaves Lázaro J, Naves Ronaldo V, Collevatti Rosane G, de C Telles Mariana P