Estudo da germinação e de alguns fatores condicionantes de semente de Adenanthera pavonina L. e sua importância para a recuperação de áreas degradadas

Abstract

Adenanthera pavonina Linnaeus is an exotic semideciduous tree species with potential for reforestation in degraded areas used for shading, landscaping, logging, crafts and medicinal use. The objective of this work was to characterize morphometrically the seeds of Adenanthera pavonina L., in a controlled environment, quantifying the moisture content, germination percentage (%), germination speed index (%), the weight of one thousand seeds (g) and fresh and dry biomass (g) of the root and shoot. The experimental design was a completely randomized design with four replications of 25 seeds for each pre-germination treatment (immersion in 98% sulfuric acid for 10 minutes, mechanical scarification with sandpaper, immersion in water at 100ºC and control). The data obtained were organized in spreadsheets and graphs in the Excel program. For statistical analysis, we used the Genes Program and Tukey test at a 5% probability level for the comparison of means and significant diagnosis. Immersion treatments in 98% sulfuric acid for 10 min and mechanical scarification with sandpaper were the most efficient methods to overcome dormancy. The studied species has rusticity and probably constitutes a good indication for reforestation processes.

Curva de embebição e influência da água sobre a germinação de sementes de mogno (Swietenia macrophylla King.)

“…O processo de germinação surge como um elemento central neste contexto, sendo influenciado por uma série de fatores ambientais, entre eles luz, oxigênio, temperatura, substrato e água. A manipulação cuidadosa desses fatores pode otimizar a taxa, a velocidade e a uniformidade da germinação, resultando em melhores condições para o desenvolvimento de plântulas (Freire et al, 2019).…”