Cytokinin for Growth and Productivity of Polyploid Chrysanthemum on Third Generation

Abstract

Chrysanthemum (Chrysanthemump) is a one of the most popular cutting flower commodities in Indonesia. The beauty of colors and variations in the shape of flowers and the low level of withering cause Chrysanthemum to be in great demand. The polyploid chrysanthemum has some superior properties but the growth rate and flowering time is slow due to colchicine. The study aimed to determine the influence of the concentration of the cytokinins in the growth and productivity of chrysanthemum polyploid genotypes. The experimental design as used Split Plot Design consists of 2 factors and 2 replications. The first factors were concentration of the cytokinin (Si, i are 1,…,4) as a main plot with different levels about 0, 1, 2,3, 4 ml L−1 of cytokinin solutions, respectively. The second factorswere the third generation of the polyploid chrysanthemum (G) genotype as a sub plot with 4 genotype, namely: g0 = KRA0, g1 = KRA1, g2 = KRA2, and g3 = KRA3. Based on the experiments and analysis results, it was found that the treatment of 3 ml L−1 of the cytokinin solution produced 16 shoots while the polyploid chrysanthemum genotype KRA2 gave the best response to the number of shoots at 12 WAP compared to other polyploid chrysanthemum genotypes.