Effect of Paclobutrazol concentration on initial formation stolon in potato plants by in vitro at different temperature conditions

The increase in potato production is constrained condition Indonesia grow the area with an altitude of 1500m above sea level. It known that at high temperatures gibberellin acid (GA) content plants will increase, thus inhibiting tuber formation. use growth retardants such as paclobutrazol can inhibit GA biosynthesis so it stimulate In this study, aim study was to determine effect concentration on initial formation plant stolons by vitro applied different temperatures. seeding stage carried out explants had been kept for 4 weeks under 16 h radiation. Paclobutrazol given pouring into explant bottle and keeping dark conditions 8 weeks. From results application affect micro tubers. where a 3 ppm (P1) able stolon elongation, stimulating subapical swelling. interactions between concentrations affected