Data/hora: 03/06/2024 05:21:13

Provedor de dados: | 1
País: | Brazil

Título:

Osmolyte accumulation and antioxidant metabolism during germination of vigorous maize seeds subjected to water deficit

Osmolyte accumulation and antioxidant metabolism during germination of vigorous maize seeds subjected to water deficit

Autores: | Prazeres, Camila Segalla; Coelho, Cileide Maria Medeiros.
Data: | 2020-04-03
Ano: | 2020
Palavras-chave: | Zea mays L.; Vigor; Antioxidant enzymes; Reserve compounds. Zea mays L vigor antioxidant enzymes reserve compounds.
Resumo: | The objective of this work was to evaluate the alterations of antioxidant enzyme reserves and antioxidant enzymes during germination under water deficit in maize hybrids and to associate with seed vigor, determining the mechanisms related to tolerance for this stress. Two three-way maize hybrids were characterized by their vigor at different levels of water deficit induced by polyethylene glycol 6000. Next, the seeds were hydrated at different osmotic potentials (0.0, -0.3, and -0.9 MPa) and removed at different times to assess the levels of the total soluble protein, total soluble sugars, proline, starch, and antioxidant enzymes, such as superoxide dismutase, catalase and ascorbate peroxidase. The analysis of variance, Tukey test at 5% and principal component analysis (PCA) were used. The vigorous hybrid (HT1) was more efficient than the low vigor hybrid seeds (HT2) in mobilizing the total soluble protein during the initial stages of germination and the total soluble sugars before and after root protrusion under water deficit in addition to increasing the catalase activity at the different osmotic potentials that were assessed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42476

10.4025/actasciagron.v42i1.42476

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42476/751375149822
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; Vol 42 (2020): Publicação contínua; e42476

Acta Scientiarum. Agronomy; v. 42 (2020): Publicação contínua; e42476

1807-8621

1679-9275

Fonte:

Copyright (c) 2020 Acta Scientiarum. Agronomy

https://creativecommons.org/licenses/by-nc-nd/4.0