Comportamento de sementes de Peltophorum dubium Sprengel (Taubert) em banco de sementes aéreo
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Data
2017-01-01
Autores
Silva, Girlânio Holanda [UNESP]
José, Anderson Cleiton
Faria, José Marcio Rocha
Pereira, Wilson Vicente Souza
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Resumo
Knowledge concerning natural regeneration strategies is important due to the effect of natural regeneration on the local ecosystem. The aim of this study was to examine the ecophysiological aspects of the Peltophorum dubium aerial seed bank. Fruits were harvested monthly, before and after seed maturation, from selected trees in the municipality of Lavras, MG, Brazil, for determination of moisture content, acquisition of tolerance to desiccation, seed viability, maintenance of dormancy, and mean germination time. Physiological maturity of the species was attained in June, when low moisture content, maximum dry matter, and high germination percentage were observed. We found that there was no change in dormancy, in germination percentage, or in the protein profile of seeds during the period they remained in the aerial seed bank. The P. dubium species creates an aerial seed bank of short serotiny, with fruits remaining attached to the tree for 9 months.
Descrição
Palavras-chave
Angico-amarelo, Seed longevity, Seed vigor, Serotiny
Como citar
Journal of Seed Science, v. 39, n. 1, p. 32-40, 2017.