PERKECAMBAHAN, PERAKARAN DAN PERTUMBUHAN HIPOKOTIL BENIH KOPI ARABIKA VARIETAS CATUAI PADA APLIKASI BERBAGAI KONSENTRASI GIBERELLIN ACID (GA3)

Abstract

The mass propagation of coffee plants requires seeds with high-viability characterized by good germination and germination growth. One way to increase the viability of coffee seeds is the provision of Gibberellic acid (GA₃). This study aims to determine the effect of several concentrations of GA₃ on the viability of Catuai variety of Arabica coffee. The experiment used a completely randomized design (CRD). Treatment with Control and 5 levels of GA₃ concentration, namely 0 (Control), 100, 200, 300, 400 and 500 ppm respectively where coffee seeds were soaked for 24 hours before being germinated. The results showed that the concentrations of 300 and 200 ppm GA₃ showed the best results for germination percentage and rate Germination, however, did not appear to have a significant effect on the root and hypocotyl length.