ResumoO teste do tetrazólio é considerado uma alternativa promissora para a avaliação rápida da viabilidade e vigor das sementes. A adequação da metodologia do teste de tetrazólio para sementes de crambe, espécie que apresenta alto potencial para produção de biodiesel, pode acelerar a determinação da qualidade de diferentes lotes. Com o objetivo de verificar as condições ideais para realização do teste de tetrazólio em sementes de crambe cinco lotes da variedade FMS Brilhante foram submetidos à embebição entre papel em água a 30°C por 3 horas e após corte longitudinal as sementes foram imersas nas concentrações de 0,075%; 0,5% e 1% de solução de tetrazólio a 30°C por 18 h e 24 h. Observou-se que na concentração de 0,075% as sementes coloriram adequadamente e com 0,5% e 1,0% a coloração foi intensa. A embebição das sementes entre papel por 3 horas, seguida de corte longitudinal e utilização de 0,075% por 18 h ou 24 h é eficiente para avaliação da viabilidade das sementes de crambe. Palavras-chave: Crambe abyssinica, viabilidade, pré-condicionamento AbstractThe tetrazolium test is considered a promising alternative for quick evaluation of viability and vigor of seeds. The adequatio of tetrazolium test methodology for crambe seeds, specie that presents high potential for biodiesel production, may accelerate the determination of quality of different lots. With the aim to verify the ideal conditions for the tetrazolium test for crambe seeds, five lots of cultivar FMS Brilhante were submitted to the imbibition between paper in water at 30°C for three hours and after the longitudinal slicing, seeds were soaked in tetrazolium solution at concentrations of 0.075%; 0.5% and 1.0% at 30°C for 18 h and 24 h. It was observed that in the concentration of 0.75% seeds got an adequate coloration and with 0.5% and 1.0% the coloration was too intense. The imbibition of seeds between paper for 3 hours, followed by the longitudinal slicing and the utilization of 0.075% concentration for 18h or 24 hours was efficient to the evaluation of viability of crambe seeds.
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