Resumo

BURGOS-AVILA, Yamith Ernesto; ALVAREZ-HERRERA, Javier Giovanni  e  PINTO-ACERO, Yomaira Liney. Physiological effect of elicitors on the growth and development of potato (Solanum tuberosum L.) variety Diacol Capiro. rev.udcaactual.divulg.cient. [online]. 2021, vol.24, n.2, e1337.  Epub 06-Dez-2021. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v24.n2.2021.1337.

Elicitors are frequently employed for the induction of different responses related to the systemic resistance of plants, however, it has not been fully characterized in the metabolic expenditure generated in the cultivation of the potato variety Diacol Capiro, the most planted for industrial processing in Colombia due to its quality and production. In this research, the effect of four elicitors on the growth and development of the potato crop was evaluated, in the municipality of Tutazá, Boyacá. The experimental design was divided plots, being the main plot the phenological stage in which the application was made (E1; formation of secondary stems), season two (E2; flowering) and season three (E3; application both in formation of secondary stems as in flowering) and the subplot, the applied elicitors (glucosamine, γ-amino butyric acid, potassium phosphite and salicylic acid) and the control without application. Data were taken 60, 80 and 100 days after sowing, having as variables: plant height, number of leaflets, total chlorophylls, photosynthetic efficiency, dry biomass and production. With the use of glucosamine the lowest results were obtained in most of the variables evaluated with respect to the control, likewise, elicitors had different effects depending on the phenological state of the crop, especially at the moment of secondary stem formation. Salicylic acid (AS) presented a statistically similar behavior to that of the control while the other applied elicitors decreased potato production.

Palavras-chave : Glucosamine; Elicitors; Salicylic acid; SPAD; Potassium phosphite.

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