Oxidative metabolism and physiological quality of artificially aged <i>Arachis hypogaea</i> L. seeds

Lima, Leandro Dias de; Gonçalves, Edilma Pereira; Moreira, Keila Aparecida; Rodrigues, Caroline Marques; Ralph, Lidiana Nayara; Viana, Jeandson Silva; Silva, Monalisa Alves Diniz da

doi:10.5935/1806-6690.20210054

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Scientific Article • Rev. Ciênc. Agron. 52 (04) • 2021 • https://doi.org/10.5935/1806-6690.20210054 copy

Oxidative metabolism and physiological quality of artificially aged Arachis hypogaea L. seeds¹ 1 Parte da Dissertação do primeiro autor, apresentado ao Programa de Pós-Graduação em Produção Agrícola, Universidade Federal Rural de Pernambuco/UFRPE

Metabolismo oxidativo e qualidade fisiológica em sementes de Arachis hypogaea L., envelhecidas artificialmente

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Peanut (Arachis hypogaea L.) is an oleaginous plant that is well-adapted to the climatic conditions in the northeast of Brazil. However, there is little information on the existing cultivars in the region with regards to their behavior under stress conditions and the biochemical changes of the seeds. The objective of this study was to investigate the physiological and biochemical changes in aged peanut seeds. The experiments were conducted at the Seed Analysis Laboratories (LAS) and Biotechnology of CENLAG, Federal University of Agreste of Pernambuco (UFAPE). Seeds of two cultivars, IAC Tatu ST and Caiana, were artificially aged at 42 °C and 100 % relative humidity for 96 h, and removed every 24 h for evaluation. Physiological potential was evaluated using germination, vigor test, and enzymatic modifications as the parameters. An increase in the accelerated aging period resulted in physiological and biochemical changes in the seeds of both cultivars. The activity of the enzymes in the aged peanut seeds was specific to the cultivar used, and the seeds of the cultivar Caiana had less vigor and decreased activity of the enzyme catalase.

Keywords:
Deterioration; Enzyme; Germinate; Oilseeds

Initial water content and after accelerated aging
Period (Hours)	TATU	CAIANA
0	5.99 a	6.49 a
24	12.40 a	14.61 a
48	12.87 a	16.32 a
72	12.58 a	16.25 a
96	16.74 a	17.01 a

	GER (%)	PC (%)	MSR (g)	MSPA (g)	MSCOT (g)	CR (cm)	CPA cm)	CAT	APX
IVG	0.99^ r significante at 5% probability, ns r not signifi cant by test t	0.91^ r significante at 5% probability, ns r not signifi cant by test t	0.45^ns	0.49^ns	0.51^ r significante at 5% probability, ns r not signifi cant by test t	0.46^ns	0.75^ r significante at 5% probability, ns r not signifi cant by test t	-0.18^ns	0.32^ns
GER		0.86^ r significante at 5% probability, ns r not signifi cant by test t	0.44^ns	0.48^ns	0.52^ r significante at 5% probability, ns r not signifi cant by test t	0.44^ns	0.74^ r significante at 5% probability, ns r not signifi cant by test t	-0.22^ns	0.34^ns
PC			0.34^ns	0.35^ns	0.32^ns	0.34^ns	0.63^ r significante at 5% probability, ns r not signifi cant by test t	-0.05^ns	0.27^ns
MSR				0.81^ r significante at 5% probability, ns r not signifi cant by test t	0.56^ r significante at 5% probability, ns r not signifi cant by test t	0.75^ r significante at 5% probability, ns r not signifi cant by test t	0.46^ns	0.15^ns	0.10^ns
MSPA					0.67^ r significante at 5% probability, ns r not signifi cant by test t	0.61^ r significante at 5% probability, ns r not signifi cant by test t	0.53^ r significante at 5% probability, ns r not signifi cant by test t	0.04^ns	0.05^ns
MSCOT						0.55^ r significante at 5% probability, ns r not signifi cant by test t	0.68^ r significante at 5% probability, ns r not signifi cant by test t	-0.16^ns	0.25^ns
CR							0.60^ r significante at 5% probability, ns r not signifi cant by test t	0.08^ns	0.05^ns
CPA								-0.33^ns	0.26ns
CAT									0.18^ns

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[1] Editor-in-Chief: Profa. Charline Zaratin Alves - charline.alves@ufms.br

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Oxidative metabolism and physiological quality of artificially aged Arachis hypogaea L. seeds1 1 Parte da Dissertação do primeiro autor, apresentado ao Programa de Pós-Graduação em Produção Agrícola, Universidade Federal Rural de Pernambuco/UFRPE

Metabolismo oxidativo e qualidade fisiológica em sementes de Arachis hypogaea L., envelhecidas artificialmente

ABSTRACT

Oxidative metabolism and physiological quality of artificially aged Arachis hypogaea L. seeds¹ 1 Parte da Dissertação do primeiro autor, apresentado ao Programa de Pós-Graduação em Produção Agrícola, Universidade Federal Rural de Pernambuco/UFRPE