Impact of waterlogging stress on the yield of specific sugarcane genotypes yields in the northeastern coastal region of Tamil Nadu

An experiment was conducted at the Sugarcane Research Station, Cuddalore during 2023-2024 to study the physiological, biochemical and yield parameters of sugarcane (Saccharum spp.) under waterlogging stress. The sugarcane plants were subjected to waterlogged at the peak growth stage (9th month to 11th month). The four varieties used in the study were Co 86032, Co 62175, CoC 13339, Co G 7 and nine clones used in the study were C 2015 095, G11035, C 16338, C 2014 516, Co 15020, C 2014 021, Si 2014 047, C 2015 006, C 30010. Various morphological, physiological and biochemical parameters such as leaf area index, chlorophyll content, nitrate reductase activities, catalase content, peroxidase activity, yield and quality parameters, were recorded after 240 days of exposure and at harvest. The results of the study indicate that clone C 16338 and variety CoC 13339 can be recommended for growing under anticipated water logging stress conditions. Both the clone C 16338 and variety CoC 13339 showed the least drop in cane yield compared to Co 86032 under waterlogging stress.