Data/hora: 08/06/2024 13:53:29

Provedor de dados: | 94
País: | Brazil
Título: | Oxidative metabolism altered by plant growth regulators in atemoia seeds (Annona x atemoya Mabb.) ‘Thompson’
Autores: | Hata,Ana Paula Yuki; Ferreira,Gisela; Sousa,Marília Caixeta; Bezerra,Breno Kennedy Lima; Kissmann,Camila.
Data: | 2021-01-01
Ano: | 2021
Palavras-chave: | Germination; Annonaceae; Enzymatic activity; Gibberellin; Cytokinin.
Resumo: | Abstract  The objective of this work was to validate the enzymatic activity in Annona x atemoyaseeds submitted to treatments with plant growth regulators belonging to the group of gibberellins and cytokinins for overcoming dormancy during the germination process. Initially, the water acquisition curve was determined, where two points of phase II (72 and 144 hours) were determined to evaluate the activity of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) enzymes in atemoya seeds after the application of two plant growth regulators. Treatments with GA resulted in higher activity of SOD enzyme, which may be favored the higher germination percentage and speed in comparison to control treatment. In cases in which SOD enzyme presented high activity, other enzymes showed the opposite, which indicates the predominantly production of superoxides during this period. The POD enzyme also has activity in seeds treated with gibberellin, which suggests interaction of ROS with GA in the process of dormancy overcoming. Treatments with cytokinin and cytokinin + gibberellin resulted in germination percentage similar to control and no activity pattern of SOD, POD and CAT enzymes that could be correlated with germination metabolism was observed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452021000102001
Editor: | Sociedade Brasileira de Fruticultura
Relação: | 10.1590/0100-29452021114
Formato: | text/html
Fonte: | Revista Brasileira de Fruticultura  v.43 n.1 2021
Fonte: | info:eu-repo/semantics/openAccess