Resumo

GARRUNA-HERNANDEZ, René et al. Pre-sowing treatments: an option to increase germination of habanero pepper seeds (Capsicum chinense Jacq.). Agrociencia [online]. 2014, vol.48, n.4, pp.413-423. ISSN 2521-9766.

Habanero pepper (Capsicum chinense Jacq.) seeds decrease their germination after storage periods exceeding 100 d. Pre-sowing treatments, reinvigorate, accelerate and uniform seed germination of the genus Capsicum. In this study habanero pepper seeds were pre-treated during 144 h with constant aeration in distilled water and aqueous solutions (treatments) of: KNO₃ at 3 %, polyethylene glycol (PEG) at 0.5 MPa, abscisic acid (ABA) at 10^-5 M and gibberellic acid (GA₃) at 400 ppm. After pre-sowing treatments, seeds were germinated in petri dishes and trays (the control was sown without pre-treatment). The experimental design was a completely randomized, the data were used to perform ANOVA and means were compared using Tukey test (p≤0.05). Results showed that seeds treated with ABA (13.22 % of germinated seeds d^-1) increased germination rate compared with the control (6.38 % of germinated seeds d^-1) and all pre-sowing treatments increased the germination percentage (%G), but not all of them maintained that increase during emergence. In emergence percentage (%E) only PEG and KNO₃ treatments (osmotic) were statistically different from the control surpassing it at 36 and 21 %. Osmotic treatments avoided protrusion during the pre-sowing treatment and their %E was similar to %G. The pre-sowing treatment of seeds is optimal if germination and emergence is increased; therefore the pre-sowing treatment of habanero pepper seeds with KNO₃, PEG and ABA is more appropriate to increase seedling establishment.

Palavras-chave : Abscisic acid; gibberellic acid; Capsicum chinense; emergence; potassium nitrate; polyethylene glycol.

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