Data/hora: 06/06/2024 00:38:17

Provedor de dados: | 39
País: | Brazil
Título: | Seed germination ecophysiology of the wild pineapple, Ananas ananassoides (Baker) L.B.Sm. (Bromeliaceae)
Autores: | Silveira,Fernando Augusto Oliveira; Santos,Jean Carlos; Fernandes,Geraldo Wilson.
Data: | 2010-12-01
Ano: | 2010
Palavras-chave: | Cerrado; Photoblastism; Recruitment; Seed bank; Seed storage.
Resumo: | In this study we investigated the effects of light, temperature, and storage on seed germination of the wild pineapple Ananasananassoides, an understorey species found in cerrado woodlands. Seeds were germinated at temperatures of 15, 20, 25, 30 and 35 ºC and a 12-hr photoperiod and continuous darkness for 30-d. Seeds were photoblastic and the optimum temperatures for germination were 25 and 30 ºC. Seeds stored for 12-mo at room temperature and at 4 ºC were set to germinate at optimum conditions. Germinability of stored seeds did not differ from that of recently collected seeds, regardless of storage temperature, indicating their physiological potential for seed bank formation. Our results suggest that as in tropical rainforests, light may be an important factor controlling recruitment from seed banks for small-sized species from the cerrado woodlands.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400026
Editor: | Sociedade Botânica do Brasil
Relação: | 10.1590/S0102-33062010000400026
Formato: | text/html
Fonte: | Acta Botanica Brasilica  v.24 n.4 2010
Fonte: | info:eu-repo/semantics/openAccess