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Germinação de sementes de Dalbergia nigra (Vell.) Fr. All.

2011; Editora da Universidade Estadual de Maringá (Eduem); Volume: 33; Issue: 4 Linguagem: Inglês

10.4025/actascibiolsci.v33i4.5834

1807-863X

Roberta Sales Guedes, Edna Ursulino Alves, Edilma Pereira Gonçalves, Pablo Radamés Cabral de França, Mácio Faria de Moura, Sueli da Silva Santos,

Soil Management and Crop Yield

Dalbergia nigra (Vell.) Fr. All., known popularly as jacarandá-da-bahia, it is a plentiful species known for the exploration of its wood. The experiment was conducted at the Laboratory of Seed Analysis (CCA/UFPB), in Areia, Paraíba State, with the objective of determining appropriate methodology for testing germination and vigor of D. nigra seeds. The experiment 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 four replications with 25 seeds each. The evaluated characteristics were: germination (%), first germination count (%), germination speed index (GSI), length and dry mass of seedlings. The best combinations for conducting germination and vigor tests with seeds of D. nigra were: temperature of 25°C and the substrate between vermiculite, on paper blotting paper and paper towel (roll); temperature of 20-30°C the substrate Bioplant® and Plantmax®.