THE ROLE OF VERNALIZATION AND GIBBERELIN IN INCREASING FLOWERING AND PRODUCTION ONIONS IN THE LOWLANDS
Importance of the work: The importance of this research is to know the role of Vernalization and Gibberellins in Increasing Shallot Production, which is still low. Objectives: This study aims to find out the role of vernalization and gibberelin in increasing the flowering and production of onions in the lowlands, this study was carried out in the form of a separate plot experiment (RPPT), the Main Plot of five selected onion varieties from the first experiment, which was grown in lowlands and highlands namely Bima Brebes Variety (V 1), Manjung Variety (V 6), Bauji Variety (V 7), Bangkok Jeneponto Variety (V 10), Mentes Variety (V 14). The plot consists of 4 stratification of vernalization temperature namely (room temperature (F1), Temperature 4 ° C (F2), Temperature 8 ° C (F3) and Temperature 12 ° C (F4). Children's Plot consists of 4 concentrations of GIBBerlin GA3, namely; 0 ppm/Aquades (H1), 50 ppm (H2), 75 ppm (H3), and 100 ppm (H4). Results: Each treatment was repeated three times, so it was obtained as much as: 5 x 4 x 4 x 3 = 240 trial plots of each research site and 80 combinations of treatments attempted. Onion varieties have different responses to the treatment of vernalization and gibberellin GA₃. No vernalization temperature strata and GA₃ concentrations consistently supported certain observational parameters for the growth and production of five varieties of onions. The Manjung and Bauji varieties that have great potential produce more botanical flowers and seeds. Main finding: Onion varieties have different responses to the treatment of vernalization and gibberellin GA₃. The Manjung and Bauji varieties that have great potential produce more botanical flowers and seeds. Vernalization given to seed bulbs interacts with flowering and botanical seed formation in lowlands.
Vernalization, Gibberelin, and Onion