The methodology of the electrical conductivity test for Carthamus tinctorius L. seeds/Metodologia do teste de condutividade eletrica para sementes de Carthamus tinctorius L.

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Publisher: ATECEL--Associacao Tecnico Cientifica Ernesto Luiz de Oliveira Junior
Document Type: Article
Length: 5,387 words

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Abstract :

HIGHLIGHTS: The electrical conductivity test was adapted for safflower seeds; it is easily reproducible and allows reliable result. The six-hour soating period for safflowerseeds represent a significant reduction in the seed conditioning period. The use of 50mL of water for the safflow erelectrical conduc Mytestis economical and practical in the routine analysis of seed laboratories. The electrical conductivity test stands out for generating quick responses for lot differentiation; however, studies are needed to improve this practice in safflower seeds. This study aimed to verify the efficiency and establish a methodology of the electrical conductivity test for safflower seeds. Initially 12 lots were characterized regarding physical properties and physiological potential. For electrical conductivity the experiment was carried out in three stages with the 12 lots: firstly the soaking period was determined (2,4, 6,8, and 16 hours), then the volume was evaluated (50, 75, 100, 150, and 200 mL), and finally the number of seeds (25 and 50 seeds) was determined. The electrical conductivity test using 25 seeds in 50 mL of distilled water for six hours of soaking enables the differentiation of safflower seed lots. Multivariate analysis of principal components is efficient in discriminating the vigor of safflower seed lots. Keywords: deterioration, physiological potential, safflower, vigor O teste de condutividade eletrica destaca-se por gerar respostas rapidas para diferenciacao de lotes, no entanto, necessita-se de estudos visando o aprimoramento desta pratica em sementes de cartamo. Objetivou-se verificar a eficiencia e estabelecer metodologia do teste de condutividade eletrica para sementes de cartamo. Inicialmente, 12 lotes foram caracterizados quanto as propriedades fisicas e potencial fisiologico. Para condutividade eletrica, o experimento foi efetuado em tres etapas com os 12 lotes: primeiro determinou-se o periodo de embebicao (2, 4, 6, 8, e 16 horas), em seguida avaliou-se o volume (50, 75, 100, 150 e 200 mL) e por fim determinou-se a quantidade de sementes (25 e 50). O teste de condutividade eletrica utilizando 25 sementes embebidas em 50 mL de agua destilada no periodo de seis horas possibilita a diferenciacao de lotes de sementes de cartamo. A analise multivariada dos componentes principais e eficiente na discriminacao do vigor de lotes de sementes de cartamo. Palavras-chave: deterioracao, potencial fisiologico, cartamo, vigor

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Gale Document Number: GALE|A662090030