Oxidative metabolism and physiological quality of artificially aged Arachis hypogaea L. seeds

LEANDRO DIAS DE LIMA, EDILMA PEREIRA GONÇALVES, KEILA APARECIDA MOREIRA, CAROLINE MARQUES RODRIGUES, LIDIANA NAYARA RALPH, JEANDSON SILVA VIANA, MONALISA ALVES DINIZ DA SILVA

Resumo


Peanut (Arachis hypogaea L.) is an oleaginous plant that stands out in the Northeast because of its adaptation to climatic conditions. However, there is little information on the characteristics of the cultivars in the region in relation to their vigor and the physical and biochemical characteristics of the seeds. The objective was to study the physiological and biochemical changes in aged peanut seeds. The experiments were conducted in the Laboratory of Seed Analysis and in the Laboratory of Biotechnology of CENLAG of the Federal Rural University of Pernambuco - Academic Unit of Garanhuns (UFRPE / UAG). Seeds of two cultivars were used: IAC Tatu ST and Caiana. The seeds were aged artificially at 42º C and 100% relative humidity for up to 96 hours and collected every 24 hours. The vigor was evaluated through germination and enzymatic tests. An increase in accelerated aging resulted in physiological and biochemical changes in the seeds of both cultivars presented deterioration due to the accelerated aging in the peanut seeds. The enzymatic activity in the aged peanut was specific to the cultivars and APX was reduced in the seeds of the Caiana cultivar with less vigor.


Palavras-chave


Deterioration; Enzyme; Germinate; Oilseeds

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Revista Ciência Agronômica ISSN 1806-6690 (online) 0045-6888 (impresso), Site: www.ccarevista.ufc.br, e-mail: ccarev@ufc.br - Fone: (85) 3366.9702 - Expediente: 2ª a 6ª feira - de 7 às 17h.