Germination of Dalbergia nigra (Vell.) Fr. All

Abstract

Dalbergia nigra(Vell.) Fr. All., known popularly as jacarandá-da-bahia, it is a plentiful species known forthe exploration of its wood. The experiment was conducted at the Laboratory of SeedAnalysis (CCA/UFPB), in Areia, Paraíba State, with the objective of determiningappropriate methodology for testing germination and vigor of D. nigra seeds. Theexperiment was carried out in an entirely randomized design in a 2 x 7 factorial scheme,with 2 temperatures (25 and 20-30oC) and 7 substrates (between sand, between vermiculite,Bioplant®, Plantmax®, between and on paper blotting paper, and towel paper), with fourreplications with 25 seeds each. The evaluated characteristics were: germination (%), firstgermination count (%), germination speed index (GSI), length and dry mass of seedlings.The best combinations for conducting germination and vigor tests with seeds of D. nigrawere: temperature of 25°C and the substrate between vermiculite, on paper blotting paperand paper towel (roll); temperature of 20-30°C the substrate Bioplant® and Plantmax®.