Envelhecimento acelerado e avaliação da qualidade fisiológica de sementes de trigo acondicionadas em diferentes embalagens e armazenadas em ambiente natural em Ibitirama-ES

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

11/06/2007

RESUMO

The wheat is a grassy one, whose seeds present high germination. These works had had as objective to study the germination, the vigor and the storage of wheat seeds. In the study of the accelerated aging and experiment casualizado was lead in the completely randomized design, with four replications of 25 seeds. The temperatures (41, 43, 45C) and the adequate period of exposition (zero, 24, 48, 72 and 96 hours) for the evaluation of seeds of wheat of cultivating had been evaluated Alliance. One concludes that: with the accelerated aging of seeds of wheat in the Temperature of 41C for periods of 24 and 48 hours of treatment were the more indicated for the wheat aging; under temperature of the 43C was recommended 24 hour s of exposition. Treatment of the seeds with accelerated aging using temperature of 45C determined the death of the seeds, culminating with deterioration. In chapter two with the objective to evaluate the physiological quality of the six to cultivate of wheat the experiment was lead in experimental completely randomized design, with four repetitions of 50 seeds, in factorial project 6x3x7, being six to cultivate of wheat (Timbaúva, CPAC 98308, CPAC 96306, CPAC 9617, Alliance and PF 950407) x three types of packings (cloth, plastic and paper) x seven periods of storage (zero, two, four, six, eight, ten and twelve months). In the storage, the types of packings, the emission of the primary root with 2 mm of length and the development of radicule for axles had been evaluated embryonic, after that it was analysis dry mass of seedlings. One concludes that: the seeds wheat of cultivating CPAC 98308 present good storage in the conditions of the city of Ibitirama; the loss of the germinative capacity of the seeds of the six after to cultivate if it gives to six months in the packings of cloth and paper and to the eight months in the plastic packing; the reduction of the physiological quality of the seeds of the six to cultivate of wheat has beginning from the sixth month and in the plastic packing; deterioration was verified in the seeds of the cloth packing to the eight months, in the one of paper to the six months and in the plastic packing to the twelve months.

ASSUNTO(S)

storage vigor triticum aestivum l. embalagem armazenamento germinação e qualidade das sementes triticum aestivum l. packing vigor quality of germination agronomia

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