| Registro completo |
| Provedor de dados: |
Rev. Bras. Fisiol. Veg.
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| País: |
Brazil
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| Título: |
Temperature-dependent germination and endo-beta -mannanase activity in sesame seeds
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| Autores: |
CARVALHO,PATRÍCIA GONÇALVES BAPTISTA DE
BORGHETTI,FABIAN
BUCKERIDGE,MARCOS SILVEIRA
MORHY,LAURO
FERREIRA FILHO,EDIVALDO XIMENES
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| Data: |
2001-01-01
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| Ano: |
2001
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| Palavras-chave: |
Endosperm
Germination rate
Sesame
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| Resumo: |
The effects of temperature on germination and endo-beta-mannanase activity in seeds of Sesamum indicum was investigated. The minimum germination temperature (Tmin) lies between 12.8°C and 13.2°C while the maximum temperature (Tmax) is located between 45.5°C and 46°C. Germinabilities are statistically not different from estimated viability (88%) between 18.8°C and 43.2°C. The Mann-Whitney test indicated the interval 31.9°C to 35.1°C as the optimum temperature (Topt) range for germination rate. When seeds incubated at temperatures at or below the Tmin and close to or above the Tmax were transferred to 30°C, those incubated at lower temperatures achieved high germinability. On the other hand, the higher the pre-incubation temperature above Tmax, the lower the germinability achieved near Topt. Seed endosperm cell wall was found to contain mannose as the main monosaccharide. An increase in endo-beta-mannanase activity in the micropylar endosperm prior to seed germination was observed only at supra-optimum temperature.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000200003
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| Editor: |
Sociedade Brasileira de Fisiologia Vegetal
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| Relação: |
10.1590/S0103-31312001000200003
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Fisiologia Vegetal v.13 n.2 2001
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| Direitos: |
info:eu-repo/semantics/openAccess
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