Methane production of banana plant: Yield, kinetics and prediction models influenced by morphological parts, cultivars and ripening stages

•Banana parts highly significantly affected SMY that flesh showed the highest value.•Pseudostem provided the highest share of energy yield generated from banana wastes.•The NSC and RES content in banana substrates promoted methane production.•Modified GOM Model is suitable to explain methane production of banana substrates.•High precision SMY prediction model was developed by ADL, HEM, RES, XF variables.