Tesis Agronomía

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    Evaluación de Giberelinas para elongación del tallo en col ornamental (Brassica oleracea)
    (2024-08) Galarza Mayorga, Tannia Vaneza; León Gordon, Olguer Alfredo
    The application of gibberellins for stem elongation in ornamental cabbage (Brassica oleracea) was evaluated. As is already known, gibberellic acid promotes cell growth by stimulating the development and elongation of the stem in plants. Therefore, in this research it was proposed to obtain long and thin stems according to the client's needs for marketing. To carry out this research, a Completely Randomized Block Design (DBCA) was used, with two doses of gibberellic acid (D1 47.5 ppm, D2 27.5 ppm) at three different times of application (E1 20 days, E2 35 days and E3 50 days) plus a control (No Application) with three repetitions, for the results a Tukey significance test was carried out at 5%, significant statistical differences were obtained in the treatments. The variables to be evaluated were: stem height (cm) where the D1E3 treatment has the greatest stem elongation with 31.63 cm. In the variable stem diameter (cm), the results obtained were that the D1E3 treatment has an average of 1.04 cm, which is acceptable for commercialization. In the variable equatorial diameter of the rosette (cm), it was found that the D1E1 treatment has an average of 6.94 cm, which is why it is acceptable for commercialization. In the variable number of rosette leaves, it was obtained that the D1E1 treatment results in 56.33 number of rosette leaves. In the variable number of leaves removed, the D1E3 treatment resulted in 16.67 leaves removed from the stem. In the variable days to harvest, it was obtained that the D2E3 treatment was harvested 94 days after transplanting. However, the variables studied can be considered according to the demands of the market and the tastes of the client at the time of marketing.