Data/hora: 09/06/2024 02:51:48

Provedor de dados: | Anais da Academia Brasileira de Ciências
País: | Brazil
Título: | Germination of Croton urucurana L. seeds exposed to different storage temperatures and pre-germinative treatments
Autores: | Scalon,Silvana P.Q.; Mussury,Rosilda M.; Lima,Andréa A.
Data: | 2012-03-01
Ano: | 2012
Palavras-chave: | Gibberellic acid; Refrigeration; "sangra d'água".
Resumo: | The present work evaluated the germinability and vigor of Croton urucurana seeds. 1) Seeds were sorted by color (caramel, gray and black) and were subjected to seven different pre-germination treatments followed by incubation at 20ºC, 25°C or 20/30°C. 2) Seeds were stored in cold chambers or at room temperature for up to 300 days and were subsequently incubated at 20/30ºC in a germination chamber or under greenhouse conditions. Only gray seeds showed significant germination rates. The highest first count percentages of total germination and the highest germination speed indices were observed in control seeds and in those which were treated with water or 200 mg. L-1 gibberellic acid for 12 hours. Seeds stored under refrigeration showed the highest values for all of the characteristics examined, as well as less electrical conductivity of the imbibing solution. Seedlings were more vigorous when seeds were stored for 300 days in a cold chamber. The seedlings production can be increased by incubating the seeds at alternating temperatures (20/30°C). The seeds do not need pre-germination treatments.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100020
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/S0001-37652012000100020
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.84 n.1 2012
Fonte: | info:eu-repo/semantics/openAccess