KARAKTERISASI 5 KANDIDAT VARIETAS F1 TANAMAN BUNGA KOL (Brassica oleracea L. var. botrytis) DI DATARAN RENDAH

Cauliflower (Brassicca oleracea var. botrytis) is one of the commercially valuable vegetables with high demand for domestic food supply. Efforts to enhance plant production can be undertaken through a plant breeding program. The initial step involves the characterization to understand the characteristics and morphological features of an individual as a guide for parent selection. The research objective is to obtain qualitative and quantitative information on the characteristics of 5 candidate F1 cauliflower varieties and to determine the level of diversity in characters compared to 5 candidate F1 reference varieties. The study was conducted from March to May 2022 in the experimental field of CV. Aura Seed Indonesia. The research utilized the single-plant method, planting in the same environment without replication. The total population was 340 plants with 50 observed samples. Data analysis was performed using a descriptive method to elaborate on the results of cluster analysis in the form of a dendrogram with a percentage of similarity. Statistical tests were conducted to determine differences between the test F1 varieties and the reference F1 varieties using Independent Samples t-test with the SPSS application. The results of qualitative observations revealed differences in leaf edge wavy character, cross-sectional curd shape, curd dome, and curd bead. For quantitative characteristics, there was similarity observed through cluster analysis, with the highest similarity being 83.03% in F1 varieties 2498 and 2499. The t-test results indicated no significant difference between the test F1 varieties and the reference F1 varieties.