| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Corte. |
|
Data corrente: |
27/02/2018 |
|
Data da última atualização: |
27/02/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
DUTRA, J. D.; RODRIGUES, A. P. D. A. C.; PEREIRA, S. R.; LAURA, V. A. |
|
Afiliação: |
JUCÉLIA DIAS DUTRA, Universidade Federal do Mato Grosso do Sul - Campo Grande; ADRIANA PAULA D'AGOSTINI CONTREIRAS RODRIGUES, Universidade Tecnológica Federal do Paraná - Campus Pato Branco; SILVIA RAHE PEREIRA, Universidade Anhanguera-Uniderp, Campo Grande, MS; VALDEMIR ANTONIO LAURA, CNPGC. |
|
Título: |
Heat treatment to overcome seeds dormancy of Panicum maximum cultivars (Poaceae). |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
African Journal of Agricultural Research, v.10, n. 50, p. 4616-4622, Dec. 2015. |
|
ISSN: |
1991-637X |
|
DOI: |
10.5897/AJAR2015.10217 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The guinea grass Panicum maximum, an African grass, is one of the main forage grasses in tropical America. Its propagation is mainly carried out by seeds, but seed dormancy hampers good pasture establishment. The aim of this study was to evaluate the use of heat treatment to overcome seed dormancy of P. maximum cultivars Milênio, Tanzânia and Mombaça. Seeds of each cultivar have been subjected to heat treatments at temperatures of 50, 60 and 70°C with exposure time for 5, 10 and 15 h. Afterwards, they were placed in germination test. The data were subjected to analysis of variance and, when significant, polynomial regression was performed, with up to 5% of probability. The variables analyzed were germination percentage, germination speed index (GSI) and average germination time (AGT). P. maximum seeds of different cultivars showed distinct responses to heat treatment. The cultivar Tanzânia responds positively to different combinations of temperature and periods of seeds exposure, and the treatment at 70°C for about 8 h is recommended to overcome dormancy with better germination performance. For cultivar Milênio, it is recommended the exposure of seeds at 70°C for 15 h. Cultivar Mombaça is negatively influenced by the heat treatment, so this treatment is not recommended. |
|
Thesagro: |
Dormência da semente; Germinação; Gramínea forrageira; Panicum maximum; Pastagem. |
|
Thesaurus Nal: |
Forage grasses; Germination; Pastures; Seed dormancy; Temperature. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02180naa a2200301 a 4500
001 2088208
005 2018-02-27
008 2015 bl uuuu u00u1 u #d
022 $a1991-637X
024 7 $a10.5897/AJAR2015.10217$2DOI
100 1 $aDUTRA, J. D.
245 $aHeat treatment to overcome seeds dormancy of Panicum maximum cultivars (Poaceae).$h[electronic resource]
260 $c2015
520 $aThe guinea grass Panicum maximum, an African grass, is one of the main forage grasses in tropical America. Its propagation is mainly carried out by seeds, but seed dormancy hampers good pasture establishment. The aim of this study was to evaluate the use of heat treatment to overcome seed dormancy of P. maximum cultivars Milênio, Tanzânia and Mombaça. Seeds of each cultivar have been subjected to heat treatments at temperatures of 50, 60 and 70°C with exposure time for 5, 10 and 15 h. Afterwards, they were placed in germination test. The data were subjected to analysis of variance and, when significant, polynomial regression was performed, with up to 5% of probability. The variables analyzed were germination percentage, germination speed index (GSI) and average germination time (AGT). P. maximum seeds of different cultivars showed distinct responses to heat treatment. The cultivar Tanzânia responds positively to different combinations of temperature and periods of seeds exposure, and the treatment at 70°C for about 8 h is recommended to overcome dormancy with better germination performance. For cultivar Milênio, it is recommended the exposure of seeds at 70°C for 15 h. Cultivar Mombaça is negatively influenced by the heat treatment, so this treatment is not recommended.
650 $aForage grasses
650 $aGermination
650 $aPastures
650 $aSeed dormancy
650 $aTemperature
650 $aDormência da semente
650 $aGerminação
650 $aGramínea forrageira
650 $aPanicum maximum
650 $aPastagem
700 1 $aRODRIGUES, A. P. D. A. C.
700 1 $aPEREIRA, S. R.
700 1 $aLAURA, V. A.
773 $tAfrican Journal of Agricultural Research$gv.10, n. 50, p. 4616-4622, Dec. 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 2 | |
| Registros recuperados : 2 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
