Data/hora: 13/06/2024 04:27:34

Provedor de dados: | Ciência Rural
País: | Brazil
Título: | Antioxidant activity of corn seeds after thermal stress
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.
Data: | 2013-06-01
Ano: | 2013
Palavras-chave: | Zea mays; Temperature; Germination; Growth.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000600002
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782013005000064
Formato: | text/html
Fonte: | Ciência Rural  v.43 n.6 2013
Fonte: | info:eu-repo/semantics/openAccess