Characterisation of drought tolerance in coconut
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Date
1993
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Abstract
Coconut palms experience moisture stress of different magnitudes depending upon the extent of dry spell. Investigations on drought tolerance centred around the morphological observations on leaf and inflorescence characters, the physiological parameters like stomatal regulation and water potential components and biochemical aspects such as epicuticular wax and assay of certain sensitive enzymes. Out of the 23 genotypes screened, ten were found to possess desirable traits to withstand moisture stress. These included high stomatal resistance with low transpiration rate, high leaf water potential, high leaf-wax content, and relatively stable enzyme activities during moisture stress. Based on the above features, the released hybrids like LO x GB, LO x COD, WCT x COD are classified as drought tolerant. A rapid screening method has been developed to evaluate a large number of samples.
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Keywords
drought tolerance, coconut
Citation
In : Advances in Coconut Research and Development 1993 (Eds.)MK Nair, HH Khan; P Gopalasundaram ; EVV Bhaskara Rao, Oxford & IBH Publishing Co. Pvt. New Delhi, 759 p(International symposium on Coconut Research and Development (ISOCRAD*II), 26-29 November 1991, CPCRI, Kasaragod) p.191-199