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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054

Resumo

FIALHO, Gustavo Sessa et al. Osmotic conditioning in seeds of 'long yellow' pepper (Capsicum annuum L.) subjected to controlled deterioration. Ciênc. agrotec. [online]. 2010, vol.34, n.3, pp.646-652. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542010000300017.

The osmotic conditioning technique has been considered promising for improving the physiological potential of seeds of various species. In this context, the study aimed to evaluate the effect of osmotic conditioning on the performance of pepper seeds subjected to controlled deterioration. Thus, seeds of 'Long Yellow pepper' (Capsicum annuum L.), with water content adjusted to 24%, were subjected to controlled deterioration in water bath at 45 °C for 0, 24, 48 and 72 hours. After that, they were osmotic conditioning in PEG 6000 to -1.1 MPa during 0, 6 and 8 days. The germination, first count of germination, germination at low temperature, speed of germination at 15 º C and 25 °C, dry weight of seedlings and length of primary root were evaluated. It was found that the osmotic conditioning was beneficial to the germination of pepper seeds deteriorated by 48 and 72 hours, not affecting the germination of seeds of high physiological quality. It also helped to improve the strength of both the seeds that had not been damaged and those deteriorated by 48 and 72 hours, being a promising technique to increase their physiological quality.

Palavras-chave : Osmotic conditioning; quality physiological; Capsicum annuum.

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