Influência das condições ambientais de armazenamento na qualidade fisiológica de sementes de Mimosa tenuiflora (Willd.) Poir

Storage is a fundamental practice in the control of physiological seed quality since it is a method that can preserve seed viability and vigor for a longer period. Thus, this study aimed to analyze the influence of storage in the physiological quality of seeds of “jurema-preta” (Mimosa tenuiflora (Willd)) in different environments and packages. The experiment was conducted in the Laboratory of Ecology and Botany (CDSA/UFCG), using seeds collected from matrix trees in the municipality of Sumé (Paraíba State, Brazil). The seeds were homogenized and placed in different packages (Kraft paper bag and glass packaging). After that, they were stored under laboratory conditions and in a freezer for nine months. In each and every month of storage, the following characteristics were evaluated: moisture content, emergence, emergence speed index, seedling length. The seeds stored in freezer in glass packaging showed the best results for all evaluated parameters, whereas the seeds stored in paper bags at room temperature lost their germination vigor after 120 days of storage. Thus, storage in glass packaging, in freezer, is more appropriate for storing seeds of Mimosa tenuiflora (Willd).