| Registro completo |
| Provedor de dados: |
Ciência Rural
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| País: |
Brazil
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| Título: |
Antioxidant activity of corn seeds after thermal stress
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| Autores: |
Marini,Patrícia
Bandeira,Juliana de Magalhães
Borba,Isabel Cristina Gouvea de
Martins,Andrea Bicca Noguez
Moraes,Dario Munt de
Amarante,Luciano do
Villela,Francisco Amaral
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| Data: |
2013-06-01
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| Ano: |
2013
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| Palavras-chave: |
Zea mays
Temperature
Germination
Growth
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| Resumo: |
The aim of this research was to analyze the effect of different temperatures on physiological quality and relate the responses with the antioxidant activity of three lots of corn seeds. The seeds from three lots were exposed for 24h at temperatures of 15, 25, 35 and 40°C and then evaluated for percentage, speed index and first germination count, as well as early growth and activity of antioxidant enzymes in the seedlings. The experimental design was completely randomized with four replications, with subsequent polynomial regression analysis. The results showed that the seeds from the three lots of corn exposed to temperatures of 15 and 40°C, were of better high physiological quality (vigor), which explains the low activity of enzymes of the antioxidant defense system in these same temperatures. The antioxidant defense system is related to the physiological quality of corn seeds exposed to thermal stress.
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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=S0103-84782013000600002
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/S0103-84782013005000064
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.43 n.6 2013
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| Direitos: |
info:eu-repo/semantics/openAccess
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