Potencial fisiológico de sementes armazenadas e desempenho de plantas de ervilha

Mielezrski, Fábio; Filho, Júlio Marcos

doi:10.1590/s0101-31222012000400019

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Therefore, the use of vigor tests capable of detecting significant differences in physiological quality in alike germination lots is essential for the seed production program (Mielezrski and Marcos-Filho, 2012).…”

Section: Introductionmentioning

confidence: 99%

Temperature and seed moisture content affect electrical conductivity test in pea seeds

et al. 2017

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-Several factors affect the electrical conductivity test efficiency, with emphasis given to the initial water content and the temperature during imbibition. This study aimed to evaluate the effect of the initial water content of pea seeds and the temperature on the electrical conductivity test efficiency. Six lots of 'Mikado' pea were used, which were previously tested for initial characterization. In the first trial, based on the initial value of the samples, the seed moisture content was adjusted to 9, 11, 13 and 15% and then the seeds were submitted to the electrical conductivity test. In the second trial, the water for seed imbibition was kept for 24 hours at 10, 15, 20, 25 and 30 ºC, and after that time the seeds were added and soaked for other 24 hours at the temperatures already mentioned. It was observed that initial seed moisture content and water temperature during imbibition influenced the results of the electrical conductivity test. This test should be carried out with distilled water, previously maintained for 24 hours at 25 °C for temperature stabilization. Then, the seeds with seed moisture content between 11 and 15% should be put to soak at 25 °C, and maintained at this temperature for 24 hours.Index terms: Pisum sativum, imbibition, exudates, vigor.Temperatura e teor de água afetam o teste de condutividade elétrica em sementes de ervilha RESUMO -Vários fatores interferem na eficiência do teste de condutividade elétrica, com destaque para teor de água inicial e temperatura durante a embebição. Este trabalho objetivou avaliar o efeito do teor de água inicial das sementes de ervilha e da temperatura na eficiência do teste de condutividade elétrica. Utilizaram-se seis lotes de ervilha 'Mikado' que foram submetidos a testes para caracterização inicial. No primeiro ensaio, baseado na umidade inicial das amostras, foi ajustado o teor de água para 9, 11, 13 e 15% e, posteriormente, foram submetidas ao teste de condutividade elétrica. No segundo ensaio, a água para embebição das sementes foi mantida por 24 horas a 10, 15, 20, 25 e 30 °C e, após este período, adicionou-se às sementes e foram colocadas para embeber por mais 24 horas nas referidas temperaturas. Observou-se que teor de água inicial e temperatura da água durante a embebição influenciaram nos resultados do teste de condutividade elétrica. Este teste deve ser realizado com água destilada previamente mantida por 24 horas a 25 °C para estabilização da temperatura, posteriormente as sementes, com teor de água entre 11 e 15%, colocadas para embeber na temperatura de 25 °C, mantidas nesta temperatura por 24 horas.Termos para indexação: Pisum sativum, embebição, exsudatos, vigor.

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Section: Introductionmentioning

confidence: 99%

Temperature and seed moisture content affect electrical conductivity test in pea seeds

et al. 2017

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Physiological quality, initial establishment and yield of wheat according to the seed treatment method1

Freiberg

Ludwig

Decarli

et al. 2017

Pesqui. Agropecu. Trop.

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New technologies are being incorporated to the seed treatment process, such as the use of products on industrial scale. This study aimed at evaluating the seed quality of wheat cultivars, as well as the influence of the seed treatment method on the establishment and yield of this crop. Seeds of the cultivars Jadeite 11, Quartzo and Tec Frontale were treated with the Spectro® fungicide (difenoconazole - 200 mL 100 kg-1 of seeds), Cruiser Opti® insecticide (thiamethoxam + lambda-cyhalothrin - 200 mL 100 kg-1 of seeds) and Polifix G4 polymer (100 mL 100 kg-1 of seeds). A completely randomized design, with four replicates, was used. The treatments consisted of industrial treatment, on farm treatment with the same products and control. Germination, first germination count and moisture content tests were carried out immediately after the seed treatment and at 30, 90 and 150 days of storage. Seedling emergence in beds was evaluated at 30, 60 and 120 days of storage. Under a randomized block design, seedling emergence and grain yield were evaluated in the field in two sowing seasons. The conventional or industrial seed treatment methods do not reduce the physiological quality and emergence of high-vigor seeds stored for 150 days, under controlled conditions of temperature and humidity. The conventional or industrial seed treatment with diphenoconazole + thiamethoxam + lambda-cyhalothrin + polymer does not increase the wheat crop plant stand and grain yield.

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Potencial fisiológico de sementes armazenadas e desempenho de plantas de ervilha

Cited by 2 publications

References 19 publications

Temperature and seed moisture content affect electrical conductivity test in pea seeds

Temperature and seed moisture content affect electrical conductivity test in pea seeds

Physiological quality, initial establishment and yield of wheat according to the seed treatment method1

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