Teste de envelhecimento acelerado em sementes de aveia preta
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Data
2009-01-01
Autores
Souza, Sandra Aparecida de [UNESP]
Nakagawa, João [UNESP]
Machado, Carla Gomes [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Brasileira de Tecnologia de Sementes (ABRATES)
Resumo
Objetivou-se com este trabalho, estudar o teste de envelhecimento acelerado tradicional (com água), em sementes de aveia preta com e sem tratamento fungicida, e o envelhecimento acelerado com solução saturada de cloreto de sódio (NaCl), visando identificar o período de exposição e a temperatura para a classificação dos níveis de vigor de lotes dessas sementes. Foram utilizados cinco lotes de sementes, nos quais foram realizados testes para a caracterização da qualidade inicial de lotes (germinação, emergência de plântulas, condutividade elétrica, o comprimento de plântulas normais e massa de 1000 sementes), e estudado o envelhecimento acelerado tradicional (com água), com e sem tratamento fungicida, e o envelhecimento acelerado com solução saturada de sal (NaCl) por períodos de 24, 48, 72, 96 e 120 horas de condicionamento às temperaturas de 40, 43 e 45ºC. O teste de envelhecimento acelerado é adequado para estimar o vigor de sementes de aveia preta pelo procedimento tradicional (com e sem tratamento fungicida) ou com solução saturada de sal, ambos a temperatura de 40ºC por 24 horas.
The present work had as its objective to study the traditional method of accelerated aging (with water), in black oats seeds with and without fungicid treatment, and the accelerated aging with saturated solution of salt (NaCl), by aiming to identify the exposition period and temperature that allow the classification of lots of black oats seeds in different vigour levels. The study was carried out by using five lots of black oats seeds. Tests were carried out to characterization of initial quality of the seed lots (tests of germination, seedlings emergency in the field, electrical conductivity, length of normal seedlings and mass of 1000 seeds) and the studies of accelerated aging consisted the traditional method (with water), with and without fungicid treatment, and accelerated aging with saturated solution of salt (NaCl) for periods of 24, 48, 72, 96 and 120 hours, conditioning at temperatures of 40, 43 and 45ºC. The studies concluded that the test of accelerated aging is adequated to evaluate the vigor of black oats seeds using the test of traditional accelerated aging (with and without treated seeds) or with saturated solution of salt, both at 40ºC during 24 hours.
The present work had as its objective to study the traditional method of accelerated aging (with water), in black oats seeds with and without fungicid treatment, and the accelerated aging with saturated solution of salt (NaCl), by aiming to identify the exposition period and temperature that allow the classification of lots of black oats seeds in different vigour levels. The study was carried out by using five lots of black oats seeds. Tests were carried out to characterization of initial quality of the seed lots (tests of germination, seedlings emergency in the field, electrical conductivity, length of normal seedlings and mass of 1000 seeds) and the studies of accelerated aging consisted the traditional method (with water), with and without fungicid treatment, and accelerated aging with saturated solution of salt (NaCl) for periods of 24, 48, 72, 96 and 120 hours, conditioning at temperatures of 40, 43 and 45ºC. The studies concluded that the test of accelerated aging is adequated to evaluate the vigor of black oats seeds using the test of traditional accelerated aging (with and without treated seeds) or with saturated solution of salt, both at 40ºC during 24 hours.
Descrição
Palavras-chave
vigor, qualidade fisiológica, Avena strigosa Schreb, vigor, physiological quality, Avena strigosa Schreb
Como citar
Revista Brasileira de Sementes. Associação Brasileira de Tecnologia de Sementes, v. 31, n. 2, p. 155-163, 2009.