Data/hora: 01/06/2024 14:19:07

Provedor de dados: | 1
País: | Brazil

Título:

Physiological and biochemical changes during the loss of desiccation tolerance in millet (Pennisetum glaucum L.) seeds

Physiological and biochemical changes during desiccation tolerance loss in millet (Pennisetum glaucum L.) seeds

Autores: | Fernandes, Joana Souza; Guimarães, Renato Mendes; Faria, Jose Marcio Rocha; Pereira, Diego de Sousa; Coelho, Stefania Vilas Boas; Oliveira, Ariadne Santos.
Data: | 2019-03-13
Ano: | 2019
Palavras-chave: | Seed Physiology; Desiccation Tolerance desiccation sensitivity; Germination; Proteins; Enzymes. Agronomy Dessecação de sementes; Fisiologia de Sementes Tolerância à dessecação em sementes.
Resumo: | The aim of this study was to evaluate the physiological and biochemical changes related to the loss of desiccation tolerance in millet seeds. The points studied were determined according to the seed imbibition curve of the hybrid ADRF6010: control (0 h), 3 h, 1 and 3 mm of radicle. The seeds were dried on silica gel for 72 h at 20 °C, followed by pre-humidification at 25 °C for 24 h. The physiological quality was evaluated by the electrical conductivity and germination test, and the seed vigor through the first count and germination speed index. The experiment was performed in a completely randomized design and means were compared by the Scott-knott test at 5% probability. The enzymatic systems evaluated were: superoxide dismutase, catalase, peroxidase, and α-amylase, and the expression of heat-resistant proteins. The enzymatic activity was quantified through the software ImageJ®. Millet seeds lost desiccation tolerance when the radicle reaches 1 mm of length. According to the enzymatic standards, the enzymes peroxidase and α-amylase, as well as the activity of heat-resistant proteins are related to the loss of desiccation tolerance in millet seeds.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36522

10.4025/actasciagron.v41i1.36522

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36522/pdf
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; v. 41 (2019): Publicação Contínua; e36522

Acta Scientiarum. Agronomy; v. 41 (2019): Publicação Contínua; e36522

1807-8621

1679-9275

Fonte:

Direitos autorais 2019 Acta Scientiarum. Agronomy

http://creativecommons.org/licenses/by/4.0