Increasing the Growth of Coelogyne rochussenii Orchid Plantlets by administering various concentrations of KH2PO4 and Pyridoxine

Coelogyne is a native Indonesian orchid with relatively large flower sizes and attractive colors. The purpose of this study was to determine the effect giving concentrations Potassium Dihydrogen Phosphate (KH2PO4) Pyridoxine in Murashige And Skoog media on growth Rochussenii De Vriese subculture. research conducted at UPT Tissue Culture Laboratory Seeds Food Crops, Horticulture, Plantation, Riau Province, Jalan Kaharudin Nasution, Kelurahan Simpang Tiga, Kecamatan Bukit Raya, Kota Pekanbaru. for four months, from September December 2022. design used factorial complete randomized (CRD) consisting 2 treatment levels, KH2PO4 Pyridoxine, three replications, KH2PO4:160 mgl, 170 mg/l), 180 190 mg/l, Pyridoxine: 0 ppm 0.0 5 ppm, 0.10 0.15 ppm. results by administering various did not significantly affect all parameters observed