β-Carotene and lutein accumulation, and carotenoid biosynthetic gene expression during fruit development and fruit ripening of A genome banana

•β-carotene and lutein content, affecting to orange-yellow pulp color in KK2.•Expression of MaPSY2a gene in KK2 affected to carotenoids accumulation.•Carotenoid biosynthetic genes correlated with β-carotene and lutein level.•Difference of A genome composition in banana affects carotenoid accumulation.