Optimization of benzyl amino purines (BAP) concentration and medium type on the induction of banana shoots (Musa acuminata Colla.) cv. Barangan Merah under in vitro condition

The use of optimum concentration of BAP and the right medium type can support shoot induction on the explant of banana sucker cv.Barangan Merah. The Research was conducted at the Laboratory of Tissue Culture, Faculty of Agriculture, Universitas Syiah Kuala. This research used a completely randomized 3x3 factorial design. The first factor was Benzyl Amino Purines (BAP) concentration at three levels of concentration, i.e. control, 3 mg.L^-1, and 6 mg.L^-1. The second factor was Musrahige & Skoog (MS) medium type at three levels, i.e. solid, solid-liquid, and liquid. Results showed that the BAP treatment of 3 mg.L^-1 had the biggest response to the number of open midribs compared to other BAP treatments. The type of solid medium tends to shoot induction better than other types of medium. The contamination that occurred was 13.9% of the 72 explants planted. The contamination was caused by Mucor and Aspergillus fungi. The bacteria causing the contamination were gram positive bacteria (coccus) and gram-negative bacteria (coccus and bacilli).