The effectiveness of growth regulators and light color spectrum on callus growth of Amorphophallus muelleri Blume. var. Madiun1: Efektivitas zat pengatur tumbuh dan spektrum warna cahaya terhadap pertumbuhan kalus Amorphophallus muelleri Blume. var. Madiun1. AGX. 2023;14(2):182-188. doi:10.35891/agx.v14i2.3309