Data/hora: 06/06/2024 04:36:32

Provedor de dados: | 39
País: | Brazil
Título: | Physiological quality and seed respiration of primed Jatropha curcas seeds
Autores: | Horbach,Micheli Angelica; Dranski,João Alexandre Lopes; Malavasi,Ubirajara Contro; Malavasi,Marlene de Matos.
Data: | 2018-03-01
Ano: | 2018
Palavras-chave: | Accelerated aging; Ascorbic acid; Gas chromatography; Oil seeds; Physic nut.
Resumo: | ABSTRACT Seed deterioration is a natural and irreversible process. Nevertheless, seed priming with water and antioxidants can minimize oxidative damage in oilseeds, resulting in attenuation of seed deterioration. The objective of this assay was to evaluate seed priming on respiratory activity of Jatropha curcas submitted to accelerated aging. Seeds from two provenances (Janauba and Pedro J. Caballero) were submitted to three priming treatments (control, immersion in deionized water, and with 750 µmol L-1 of ascorbic acid) and treated for accelerated aging at 41 °C for 72 h. The results showed that the priming of J. curcas seeds promoted tolerance to accelerated aging. Primed seeds, with ascorbic acid from Janauba and deionized water from Pedro J. Caballero, resulted in a higher percentage of normal seedlings, and increased germination speed index and seed respiration. The decline of physiological quality of J. curcas seeds after accelerated aging is directly associated with a reduction in respiratory activity that is related to seed moisture content.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100063
Editor: | Sociedade Botânica do Brasil
Relação: | 10.1590/0102-33062017abb0231
Formato: | text/html
Fonte: | Acta Botanica Brasilica  v.32 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess