Indexing certain physiological parameters on drought management in rainfed coconut

摘要

The genotype of coconut East Coast Tall was studied for its tolerance of drought through the physiological parameters by using different drought management practices. During the time of stress (April, May, June) the treatment like coconut husk burialin the basin had significant difference by higher stomatal resistance (rs) low transpiration rate (Tr). This was supported by Lower Stomatal Index. Further the leaf samples registered higher CSI, higher NR activity, with higher content of protein and total sugars. The same trend of results were observed in prolific, relative water content and epicuticular wax content.