Rajagopal, V.Kasturi Bai, K.V.Voleti, S.R.Shivashankar, S.2014-08-202014-08-201988Paper presented in the International Congress of Plant Physiology, New Delhi, 15-20 Jan. 1988http://hdl.handle.net/123456789/4894Effect of soil moisture on morphological, physiological and biochemical responses of coconut genotypes was studied. The genotypes responded to moisture stress to different degrees. The number of drooping leaves was higher in COD x WCT than WCT and WCT x COD. WCT and WCT x COD had higher stomatal resistance, and leaf water potential than COD x WCT. Under stress, there was an increase in epicuticular wax in all the genotypes. The enzymes, add phosphatase and glutamate - oxaloacetate transaminase, were enhanced during stress conditions. The yield characteristics between rainfed and irrigated palms revealed that there was greater decrease in total nut yield and kernel dry weight in COD x WCT than that in the other two genotypes.enArticle