Análise biométrica de sementes de Mimosa tenuiflora (Willd) Poir.

Abstract

The objective of this work was to realize the biometric characterization of Mimosa tenuiflora (Willd.) Poir seeds. from the municipality of Livramento in Cariri, Paraíba. The moisture content, weight of a thousand seeds and number of seeds per kilogram were recorded. The length, width and thickness of the seeds were also evaluated. Histograms were constructed to analyze the frequency distribution pattern of biometric characteristics. The moisture content recorded was 15.11% and the weight of a thousand seeds was 11.224 g, corresponding to approximately 89,095 seeds per kilogram. Considering the biometric data of the seeds, the values were 4.0300 mm for the average length, the width was 3.4413 mm and the thickness was 1.4800 mm. Particularly related to the evaluation of the frequency distribution by classes of M. tenuiflora seeds, it was observed that the length varied from 3.54 to 4.84 mm, with the highest concentration being in the range between 3.81 and 4.19 mm with an accumulated frequency of 76% of the seeds. The width of the seeds varied from 0.90 to 3.90 mm, with its highest concentration being between 3.01 and 3.90 mm with an accumulated frequency of approximately 98% of the seeds. For the thickness of the seeds, it ranged from 1.17 to 1.87 mm, thus recording that its highest concentration is between 1.46 and 1.66 mm with an accumulated frequency of approximately 56% of the seeds. Therefore, the recorded data are characterized as important for defining strategic actions that can promote the conservation of this species and also contribute to programs aimed at restoring degraded ecosystems.