Influencia del ácido giberélico (AG3), etanol y cianamida hidrogenada (Dormex) sobre la brotación de yemas a partir de tubérculos de Solanum tuberosum L. var. Cecilia.

Abstract

Induction of sprouting is widely used in Solanum tuberosum tubers to reduce the sprout growth time. The main objective of this article was to evaluate the effect of different concentrations of gibberellic acid (GA3), ethanol, and hydrogen cyanamide (Dormex) on the budding of buds, length, and number of sprouts in Solanum tuberosum L. var. Cecilia tubers. Previously disinfected tubers were immersed in three sprouting inducers at different concentrations and placed in two peat-based substrates (TS1 and TS2). The tubers were submerged for 72 hours for gibberellic acid, while hydrogen cyanamide (Dormex) and ethanol were immersed for 15 minutes. The number and length of sprouts per tuber were evaluated. A completely randomized block design was used in each experiment. At 21 days of using gibberellic acid (GA3) (5 mg.L-1, 9 mg.L-1, 7 mg.L-1, and 3 mg.L-1), ethanol (0.5%, 0.7%, 0.3%, 0.9%, and 0.1%), and hydrogen cyanamide (Dormex) (3%, 4%, 2%, 0.5%, and 1%), the length of the sprouts in S. tuberosum var. Cecilia tubers increased, but it did not affect the number of projections. The types of substrates (TS1 and TS4) did not influence the length or number of sprouts in the budding of Cecilia potato tubers. Based on the results of this study, it was concluded that GA3, ethanol, and Dormex promoted the budding of buds in S. tuberosum var. Cecilia tubers. Keywords: activators, dormancy, inductor, latency, shoots.