Data/hora: 02/06/2024 04:53:47

Provedor de dados: | Revista Brasileira de Botânica
País: | Brazil
Título: | Note on the germination of Vochysia tucanorum seeds treated with growth regulators
Autores: | Pereira,Bruno F.; Simão,Edson; Terra Filho,João B.; Cardoso,Jean C.; Cardoso,Victor J. M.
Data: | 2011-06-01
Ano: | 2011
Palavras-chave: | CEPA; Ethylene; Gibberellin; Light; Temperature.
Resumo: | (Note on the germination of Vochysia tucanorum seeds treated with growth regulators). The aim of this work was to evaluate the germination response of Vochysia tucanorum Mart. seeds treated with GA3 and CEPA and germinated under white light or darkness. Newly collected seeds from a Cerrado area were stored for 14 days at two temperatures (25 °C ± 2 and 7 °C ± 1). After the storage period the seeds were pre-treated with distilled water (control), gibberellic acid (GA3), 2-chloroethylphosphonic acid (CEPA) and a mixture of GA3 + CEPA. Following this, the seeds were sown in Petri dishes on filter paper moistened with distilled water and germinated in either darkness or white light. The results suggest that seeds are non-photoblastic and non-dormant, however a photoblastic behavior emerges when the seeds were previously stored at low temperature and imbibed in CEPA and GA3 solutions. In general, there is no difference between the 7 °C and 25 °C storage temperatures. The germination of seeds pre-treated with CEPA and CEPA + GA3 under white light was faster as compared to the distilled water control, and the effect of the CEPA + GA3 mixture was more pronounced than CEPA alone. Thus, the germination rate of V. tucanorum seeds can be improved by treatment with CEPA or CEPA + GA3 under white light.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042011000200010
Editor: | Sociedade Botânica de São Paulo
Relação: | 10.1590/S0100-84042011000200010
Formato: | text/html
Fonte: | Brazilian Journal of Botany  v.34 n.2 2011
Fonte: | info:eu-repo/semantics/openAccess