Data/hora: 13/06/2024 01:24:03

Provedor de dados: | 52
País: | Brazil
Título: | Germination, carbohydrate composition and vigor of cryopreserved Caesalpinia echinata seeds
Autores: | Zanotti,Rafael Fonsêca; Motta,Ludymila Brandão; Bragatto,Juliano; Labate,Carlos Alberto; Salomão,Antonieta Nassif; Vendrame,Wagner A.; Cuzzuol,Geraldo Rogerio Faustini.
Data: | 2012-10-01
Ano: | 2012
Palavras-chave: | Brazilwood; Carbohydrate; Conservation; Germination; Seed bank; Storage.
Resumo: | The present study investigated the germination and vigor of Caesalpinia echinata (Brazilwood) seeds stored at negative temperatures. Recently harvested seeds were cryopreserved at -18º or -196ºC and periodically evaluated for germination, seed vigor and carbohydrate composition. The temperatures did not influence the germination percentages or vigor. The germination percentage decreased from 88% in recently harvested seeds to 60% after 730 days of storage. The different temperature and storage times tested did not affect the vigor seed germination as indicated by the measures of plant growth and survival. The different temperatures used did not cause changes in the carbohydrate composition. The tegument cell walls were rich in lignin, arabinose and xylose. The cytoplasm of the cotyledons and embryos had high levels of glucose, fructose, and sucrose. The cryopreservation technique here presented was effective in the conservation of Brazilwood seeds for the medium term.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500004
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132012000500004
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.55 n.5 2012
Fonte: | info:eu-repo/semantics/openAccess