Growth and Cytokinin Content of Black Rice Plants ( Oryza sativa L.”Aen Methane”) Results Treatment Paclobutrazol and Organic NPK

Abstract

Black rice is one of the plant foods which is less cultivated in Indonesia. Today it is interesting because it contains anthocyanin which is good for health. The aim of this study was to evaluate the effect of packlobutrazol and NPK organic fertilizer to growth, endogenous cytokinin, yield and anthocyanin content in black rice (O. sativa 'Aer Mentan'). This research uses Factorial block design 4 x4. First factor was paclobutrazol with 0 ppm, 12.5 ppm, 25 ppm, 50 ppm concentration. The second factor was fertilizer with dose 0 g, 2 g, 4 g, and 6 g with 4 replication. Statistical analysis used Anova (0.05) and to determine significant difference among treatments performed used DRMT. This research found that paclobutrazol 50 ppm reduced stem black rice, increased diameter, increased panicle length, , tiller number . Combination between paclobutrazol 50 ppm 4 gr /pot and 6 gr/pot organic NPK fertilizer 100 weight grain, Combination of paclobutrazol 12.5 ppm and NPK organic fertilizer 6 gr/pot increased root length. Paclobutrazol treatment 25 ppm could increase endogenous cytokinin.