Unidad Posgrado Facultad Ingeniería Agronómica

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    Evaluación de giberelina y citoquinina en la inducción floral y rendimiento del cultivo de fresa (Fragaria ananassa Duch.) Variedad Albión
    (2022-08) Valle Naranjo, Gustavo Daniel; León Gordón, Olguer Alfredo
    The present work was done at Cevallos Canton, Tungurahua province and the aim was to determine the effect of gibberellin (AG3) and Cytokinin (Kinetin) on flower induction and yield of Fragaria ananassa Duch. cultivar “Albión” because not any studies have been executed in this scenario. During the experimental development in trial for the first flowering cycle the following variables were evaluated; days to flowering and number of flower per plant at the first producing cycle (3 months), also number of fruits per plant, fresh weight of fruits, equadorial and polar diameter, Total Solid Solubles (TSS), dry matter, yield per hectare and Benefic. Cost rate were. When we applied 5.0 mg.L-1 AG3 + 25 mg.L-1 kinetin, the days to flowering were reduced in 12.5%, 13.8% of fresh weight increased respect to control without hormones. When 15 mg.L-1 AG3 + 0.375 mg.L-1 Kinetin were applied flower numbers increased in 20% and number of fruits in 17,4%. The spray of 10 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin increased equadorial diameter in 1.3% and the polar diameter in 2.0 %. After application of 5.0 mg.L-1 AG3 + 0.375 mg.L1 Kinetin dry matter was higher in 1.16 % respect to control. Combined mixtures of 5.0 mg.L-1 AG3 + 0.125 mg.L-1 Kinetin, 10 mg.L-1 AG3 + 0.375 mg.L-1 Kinetin and 15,0 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin, reduced acidity in 0.48% in comparison with the control. For Total Solids Soluble no effect was observed after AG3 and Kinetin in any combination. The most profitable treatment was the application of 5.0 mg.L-1 AG3 + 0.250 mg.L-1 Kinetin, which reach $ 0.37 per invested dollar. The mixture of AG3 and Kinetin using different doses and combinations in F. ananassa, variety Albión, let us an efficient managements of flower induction, increased yield for selecting the best combination of plant hormones to reach higher profitability, aspect of great concern to farmers of strawberry at Cevallos Canton from Tungurahua province. Keywords: GA3, Albión, biostimulant, phytohormone, phytoregulator, bloom, Fragaria, strawberry, gibberellin, kinetin.