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| Corrêa,Natália Silveira; Bandeira,Juliana de Magalhães; Marini,Patrícia; Borba,Isabel Cristina Gouvea de; Lopes,Nei Fernandes; Moraes,Dario Munt de. |
| The germination and development of several plant species can be limited when those plants are grown in soils with high salinity, which reduces seedling viability and vigor, as well as activating the antioxidant defense system. The aim of this study was to evaluate germination, initial growth and activity of antioxidant enzymes (superoxide dismutase, catalase and ascorbate peroxidase) in seedlings of three onion cultivars (Madrugada, Fepagro 27 and Petroline) exposed to different concentrations of NaCl (0, 40, 80, 120 and 160 mM). Seedlings were evaluated for viability, vigor and antioxidant enzyme activity. The experimental procedures were completely randomized in 3 × 5 factorial design, with each treatment performed in triplicate, at a significance level... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Growing; Oxidative stress; Germination; NaCl. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200013 |
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| 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. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Temperature; Germination; Growth. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000600002 |
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