Resin Canal Discolouration (RCD) – A Great Handling Disorder in Mango (Mangifera indica L.)

Abstract

In mango physiological disorders like flower drop, malformation, under skin browning (USB) and resin canal discolouration (RCD) were caused by nutritional insufficient and improper management practices during harvesting to storage. Among them, resin canal discolouration (RCD) was formed from exocarp (skin) to fleshy fruit portion (mesocarp) region. It was formed due to ecological imbalance of pressure between fruit and atmosphere during handling and transit stage. This canal browning discolouration was consisted with phenolic, starch substances associated with bacterial spp. of Enterobacter and Pantoea.  It acts against to pest and pathogen’s invasion and regulates the ethylene biosynthesis during fruit ripening. This discolouration causing severe reduction in marketable value and annoying experience in human diet. Following, proper farm practices from harvesting to storage to avoid the RCD and given the better money value for fruit merchants.