Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Synchronizing the in vitro germination of Psidium guineense Sw. seeds by means of osmotic priming.
Autores:  SANTOS, M. A. C. dos
REGO, M. M. do
QUEIROZ, M. A. de
DANTAS, B. F.
OTONI, W. C.
Data:  2017-01-17
Ano:  2016
Palavras-chave:  Psidium guineense
Acessos de araça
Goiaba
Germinação
Semente
Caatinga
Guava
Seeds
Resumo:  The Brazilian guava (Psidium guineense Swartz) is seed-propagated and, being native to the Caatinga biome, may frequently have uneven germination.Thus, we aimed to evaluate the synchronization of the in vitro seed germination of three accessions of the Brazilian guava, using water, polyethyleneglycol (PEG 6000), and potassium nitrate (KNO3) at different potentials and times of osmotic priming. Seeds from three accessions of the Brazilian guava (Y85, Y93,and Y97) from the UNEB/BA Germplasm Active Bank were subjected to the following pretreatments: -0.6, -1.0, -1.4, and -1,8 MPa PEG 6000; 10 and 20% KNO3 for 24h; 10 and 20% KNO3for 48h; water for 24 and 48h; and non-primed seeds as the control. The experimental design was therefore a 10x3+1 factorial scheme. We assessed the germination percentage (G), mean germination time (MGT), germination speed (GS), and germination speed index (GSI). Data was subjected to analysis of variance followed by a means test (Duncan at 5% probability) and regression. There was interaction between the priming treatments and accessions for all evaluated features, except G. PEG 6000 decreased the MGT (from 6 to 8 days) and increased GS and GSI of seeds from all three accessions at potentials -1.0 to -1.5 MPa.Water-priming had a positive effect on MGT, GS, and GSI of accession Y85 seeds. KNO3 negatively affected germination of seeds from all three accessions. Thereby, we could synchronize seed germination of accessions Y85 and Y97 with PEG 6000.

2016
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  56292

http://www.alice.cnptia.embrapa.br/handle/doc/1060998

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/153424/1/Barbara-1.pdf

10.1590/0100-67622016000400008
Editor:  Revista Árvore, Viçosa, MG, v. 40, n. 4, p. 649-660, 2016.
Relação:  Embrapa Semiárido - Artigo em periódico indexado (ALICE)
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional