adequação do teste de condutividade elétrica para sementes de pisum sativum subsp. arvense suitability of electrical conductivity test for seeds of pisum sativum subsp. arvense
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ID: 243720
2011
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Abstract
A qualidade da semente na produção agrícola é um dos principais fatores a ser considerado na implantação da cultura, de forma que se torna importante a obtenção de informações sobre a germinação e o vigor das sementes, além da necessidade de avaliá-los. Dentro desse contexto, este trabalho teve como objetivo adequar a metodologia do teste de condutividade elétrica para a avaliação da qualidade fisiológica de sementes de Pisum sativum subsp. arvense. Para tanto, foram utilizados dez lotes de sementes da cultivar IAPAR 83, empregando-se períodos de condicionamento de 8, 16, 20, 24 e 28 horas, combinados às temperaturas de 20 e 25°C e volumes de 75 e 250mL de água. Além destes, foram conduzidos os testes de germinação, primeira contagem de germinação e emergência de plântulas. Para ambas as avaliações, foram utilizadas quatro repetições de 50 sementes. Os testes de vigor, assim como o teste de germinação foram sensíveis para avaliar a qualidade das sementes dos diferentes lotes estudados, porém houve variações na ordenação deles quanto ao vigor. O volume de água, o tempo e a temperatura de embebição influenciaram os valores de condutividade elétrica. Concluiu-se que o teste de condutividade elétrica utilizando 250mL de água, na temperatura de 25°C por 24 horas é promissor para a diferenciação de lotes de sementes de P. sativum subsp. arvense.
Seed quality in agricultural production is a major factor to be considered in the deployment of a crop, so it becomes important to obtain information about seed vigor and germination and. This study had the objective to adjust the methodology of the electrical conductivity test to evaluate the physiological quality of Pisum sativum subsp. arvense seeds. Ten lots of the cultivar 'IAPAR 83' were studied to establish the methodology for the electrical conductivity test. It was studied germination, first count of germination and seedling emergence in greenhouse. For the electrical conductivity test, different temperatures (20°C and 25°C), water volumes (75mL and 250mL) and imbibition periods (8, 16, 20, 24 and 28 hours) were evaluated. For both evaluations, four replications of 50 seeds were used. The vigor and germination tests were sensitive to evaluate the quality of seeds from different studied lots, although there were variations in the ordering of the lots with respect to their vigor. The water volume, time and soaking temperature influenced the electrical conductivity values. It was concluded that the electrical conductivity test is sensitive to differentiate seed lots of forage pea whenever conducted with 250mL of water under 25°C for 24 hours.
Seed quality in agricultural production is a major factor to be considered in the deployment of a crop, so it becomes important to obtain information about seed vigor and germination and. This study had the objective to adjust the methodology of the electrical conductivity test to evaluate the physiological quality of Pisum sativum subsp. arvense seeds. Ten lots of the cultivar 'IAPAR 83' were studied to establish the methodology for the electrical conductivity test. It was studied germination, first count of germination and seedling emergence in greenhouse. For the electrical conductivity test, different temperatures (20°C and 25°C), water volumes (75mL and 250mL) and imbibition periods (8, 16, 20, 24 and 28 hours) were evaluated. For both evaluations, four replications of 50 seeds were used. The vigor and germination tests were sensitive to evaluate the quality of seeds from different studied lots, although there were variations in the ordering of the lots with respect to their vigor. The water volume, time and soaking temperature influenced the electrical conductivity values. It was concluded that the electrical conductivity test is sensitive to differentiate seed lots of forage pea whenever conducted with 250mL of water under 25°C for 24 hours.
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machado2011cinciaadequao
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| Authors | ;Carla Gomes Machado;Cibele Chalita Martins;Denise Garcia de Santana;Simério Carlos Silva Cruz;Silvia Sanielle Costa de Oliveira |
| Journal | Trials |
| Year | 2011 |
| DOI |
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| Keywords | Keywords not found |
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