Alterações fisiológicas e bioquímicas em sementes de Pterogyne nitens tull. Durante o envelhecimento artificial

Content Provider	Semantic Scholar
Author	Ataíde, Glauciana Da Mata Flôres, Andressa Vasconcelos Borges, Eduardo
Copyright Year	2012
Abstract	The accelerated aging test is usually used to evaluate seeds vigor and quality. This study aimed to investigate and establish relations among deterioration, physiological changes, and catalase enzyme activity, during the artificial aging process of Pterogyne nitens seeds. So, P. nitens seeds with and without dormancy overcoming, with the application of concentrated sulfuric acid (95-99%), for 10 minutes, were exposed to the accelerated aging test, for 0, 24, 48, and 72 hours, determining the germination percentage, lipids peroxidation, and catalase enzyme activity. The artificial aging process significantly affected the viability and vigor seeds, after a previous dormancy overcoming, with a decrease in germination and catalase enzyme activity and an increase in lipids peroxidation, during the aging process. For seeds that did not overcome dormancy, no relation among artificial aging, physiological changes, and enzyme activity was observed, so that dormancy acts as a protective mechanism for seeds oxidative stress.
Starting Page	71
Ending Page	76
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1590/S1983-40632012000100010
Volume Number	42
Alternate Webpage(s)	http://www.scielo.br/pdf/pat/v42n1/10.pdf
Alternate Webpage(s)	https://doi.org/10.1590/S1983-40632012000100010
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article