Maturação fisiológica de sementes de sabiá
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Data
2005-06-01
Autores
Alves, Edna Ursulino [UNESP]
Sader, Rubens [UNESP]
Bruno, Riselane de Lucena Alcântara
Alves, Adriana Ursulino
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Brasileira de Tecnologia de Sementes (ABRATES)
Resumo
O objetivo desta pesquisa foi estudar o processo de maturação de sementes de sabiá (Mimosa caesalpiniifolia Benth.). Foram realizadas dezesseis colheitas semanais de frutos e sementes de árvores, no município de Areia - Paraiba, no período de agosto a novembro de 2001. As colheitas iniciaram-se aos 105 dias e estenderam-se até os 210 dias após a antese. Foram avaliadas as dimensões, o teor de água e a massa fresca e seca de frutos e sementes, bem como a germinação e o vigor (primeira contagem de germinação, comprimento e massa fresca e seca das plântulas). Concluiu-se que a maturidade fisiológica das sementes de sabiá ocorre entre 154 e168 dias após a antese, podendo a colheita ser realizada até 189 dias após a antese, uma vez que a partir deste período ocorre elevada perda de frutos e sementes devido à dispersão natural.
The objective of this research was to study the maturation process of the Mimosa caesalpiniifolia Benth. seeds. The seeds and fruits were collected from plants located, Areia County, State of Paraíba, Brazil. Were made sixteen weekly fruits and seeds harvests of starting from 105 days after anthesis in the period of August up to November, 2001. Were evaluated the fruits and, seeds dimensions, the moisture content; the fruits and, seeds fresh and dry weight mass, the germination percentage; and first germination count, length and the seedling fresh and dry weight mass. According to the obtained results, it was observed that the physiological maturity of Mimosa caesalpiniifolia occurred from 154 days after the anthesis extending up to 168. The harvesting cannot be delayed beyond 189 days after the due to a great loss of fruits and seeds caused by natural dispersion.
The objective of this research was to study the maturation process of the Mimosa caesalpiniifolia Benth. seeds. The seeds and fruits were collected from plants located, Areia County, State of Paraíba, Brazil. Were made sixteen weekly fruits and seeds harvests of starting from 105 days after anthesis in the period of August up to November, 2001. Were evaluated the fruits and, seeds dimensions, the moisture content; the fruits and, seeds fresh and dry weight mass, the germination percentage; and first germination count, length and the seedling fresh and dry weight mass. According to the obtained results, it was observed that the physiological maturity of Mimosa caesalpiniifolia occurred from 154 days after the anthesis extending up to 168. The harvesting cannot be delayed beyond 189 days after the due to a great loss of fruits and seeds caused by natural dispersion.
Descrição
Palavras-chave
Mimosa caesalpiniifolia Benth, Harvesting, Germination, Vigor, Mimosa caesalpiniifolia Benth, época de colheita, Germinação, Vigor
Como citar
Revista Brasileira de Sementes. Associação Brasileira de Tecnologia de Sementes, v. 27, n. 1, p. 1-8, 2005.