Biometria e qualidade fisiológica de sementes de Amburana cearensis (Allemão) A.C. Sm. coletadas em Itapetim – PE.

Abstract

Amburana cearensis (Allemão) A. C. Sm., is a tree of great importance for the Caatinga and adjacent areas. To ensure its conservation and sustainable exploitation, the study of physiological quality is a crucial factor, as it is directly related to its ability to perform vital functions. Therefore, the objective of the research was to evaluate the biometrics and physiological quality of the seeds of Amburana cearensis (Allemão) A. C. Sm. collected in semi-arid regions. The work was carried out at the Ecology and Botany Laboratory and the Plant Anatophysiology Laboratory (CDSA/UFCG). The seeds were collected from matrices located in the municipality of Itapetim - PE and taken to the laboratory, where they were homogenized, and subjected to biometric analyzes (weight, length, width and thickness) and physiological quality where the following parameters were evaluated: water content , germination/emergence, germination/emergence speed index and seedling length. Thus, it was possible to verify that the frequency distribution by seed classes presented a weight in the highest concentration between 0.4000 – 0.4900mg with an accumulated frequency of 91%, width between the class 10.6 – 11.5mm, with an accumulated frequency of 93%. The thickness between 4.2 - 4.9mm and an accumulated frequency of 95% and the length with the highest concentration between 14.1 - 15mm, presenting an accumulated frequency of 83%. As for physiological quality data, they showed the best results when subjected to BOD with germination data of 90.1%, IVG of 2.76 and seedling length of 23.08cm. Thus, values obtained that show that Amburana cearensis seeds present uniform biometric values, with relatively close frequency data, are considered an important parameter to assist in the characterization of this species.