Data/hora: 09/06/2024 22:07:34

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 11/09/1996
Data da última atualização: | 07/08/2013
Autoria: | WHITEMAN, P. C.; MENDRA, K.
Afiliação: | Department of Agriculture, University of Queensland, St. Lucia, Queensland, Australia. Faculty of Animal Husbandry, Udayana University, Denpasar, Bali, Indonesia.
Título: | Effects of storage and seed treatments on germination of Brachiaria decumbens.
Ano de publicação: | 1982
Fonte/Imprenta: | Seed Science and Techonology, v.10, p.233-242, 1982.
Idioma: | Inglês
Conteúdo: | Germination of Brachiaria decumbens was shown to be controlled by two dormancy mechanisms. Primary dormancy was variably expressed in freshly harvested seed and overcome by 'after ripening' during storage of up to three monyhs. Long term dormancy may be due to mechanical restriction imposed by the seed coat and to inhibition of oxygen diffusion due to the closely appresed, hard, shiny palea and lemma structures enclosing the caryopsis. Removal of these structures by hand allowed germination percentage up to 100 in naked caryopses. Impermeability of the seed coat declined time in storage up to one year. Germination of intact stored seed reached 40% to 55%. Further storage at 10C and 29% RH up to 41/2 years did not result in increased germination in intact caryopses, although viability was maintained at 80% to 90%. Scarification in concentrated H2SO4 for 20 minutes increased germination of stored seed to 72%.
Palavras-Chave: | Pasture; Seed.
Thesagro: | Armazenamento; Brachiaria Decumbens; Germinação; Pastagem; Semente.
Thesaurus Nal: | germination; storage.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (33025-1) - ADD - SP - -- - SP3268 -  - 3268 - DIS