Resumo

NEUMANN SILVA, Vanessa et al. Sweet pepper seed treatment with salicylic acid - effects on the physiological potential of seeds and seedling production. Investig. Agrar. [online]. 2023, vol.25, n.1, pp.1-10. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2023.junio.2501739.

Seed quality is a key factor for crops success. Seed treatment can contribute to standardizing seed quality parameters, and consequently seedling production. Thus, the objective of this research was to evaluate the effect of seed treatment of different sweet pepper cultivars, with doses of salicylic acid, on the physiological potential of seeds and seedling production. The experiments were carried out in two stages: in the laboratory to evaluate the physiological potential, and in an agricultural greenhouse, to evaluate the effect of treatments on seedling production. Bell pepper seeds of cultivars All Big and Ikeda were used. Seed treatment was performed with salicylic acid at doses of 0, 0.1, 0.2, and 0.4 (mM). After the treatment, the seeds were submitted to germination test, and seedling growth under normal conditions and in a saline medium (in the laboratory). In the second stage, the seeds were used in the production of sweet pepper seedlings in an agricultural greenhouse, and the following were evaluated: plant emergence, plant height, number of leaves, root length, and dry mass of plants during 35 days. It was possible to conclude that under the conditions in which this research was carried out, no effects were observed to increase the physiological potential of sweet pepper seeds, cultivars All Big and Ikeda, as a function of seed treatment with doses between 0 and 0.4 mM of SA; as well as no positive effects of stimulating the growth of seedlings were observed. Furthermore, a reduction was observed in some parameters, both in the laboratory and in the greenhouse, with increasing doses, especially for the Ikeda cultivar, which generally had an inhibitory effect with increasing AS doses.

Palavras-chave : Capsicum annuum; germination; growth regulator.

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