Caracterização morfométrica de duas populações de murici (Byrsonima cydoniifolia A. Juss) de banco de germoplasma - Barra do Garças - MT

Abstract

Byrsonima cydoniifolia is a native species of Cerrado, belongs to family Malpighiaceae. It is a fruit species, popularly known as murici, of great extractive potential, and also used as a medicinal. It is an undomesticated species with great lack of information on its morphometric diversity. Morphometric characterization provides information for resource conservation and exploitation, helping to detect genetic variability within populations of the same species. The objective of this work was the morphometric characterization of B. cydoniifolia present in the germplasm bank of the Federal University of Mato Grosso - Araguaia University Campus, Barra do Garças - MT. Two populations named Beija-Flor and Alencar were analyzed for vegetative characters: plant height, stem diameter, crown diameter, internode length, leaf length and width, leaf and reproductive petiole length and width: number of flower buds, flower bud diameter, flower bud peduncle length, inflorescence length, fruit mass, fruit diameter and length, and pyrene diameter. The means and standard deviations were estimated. The t-test was used to compare means between the two populations. Overall, population Beija-Flor had higher averages than population Alencar for most characters. It was found the existence of morphometric variability between and within the populations that allow selection and improvement processes. For this species it was felt the need to define morphological descriptors for the characterization of each progeny present in the Germplasm Bank 2013.