Morpho-physiological characterization of spring wheat genotypes under drought stress.

Muhammad Jurial Baloch; Jim Dunwell; Naqib Ullah Khan; Wajid Ali Jatoi; Abdul Aziz Khakhwani; Nasreen Fatima Vessar; Samrin Gul

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Morpho-physiological characterization of spring wheat genotypes under drought stress.

Author(s)

Muhammad Jurial Baloch Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

Jim Dunwell School of Biological Sciences, University of Reading, U.K

Naqib Ullah Khan Department of Plant Breeding and Genetics, The University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan

Wajid Ali Jatoi Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

Abdul Aziz Khakhwani Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan

Nasreen Fatima Vessar Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

Samrin Gul Department of Plant Breeding and Genetics, The University of Agriculture, Peshawar, Khyber Pakhtunkhwa, Pakistan

Abstract

Water-deficit is a severe abiotic stress and major constraint to wheat productivity with effect on plant growth and development. The objective of this study was to characterize drought tolerant and susceptible spring wheat cultivars on the basis of physiological and yield attributes. The experiment was comprised of two irrigation regimes i.e. irrigated and 65% drought stress and ten wheat cultivars viz. Anmol, Moomal, Sarsabz, Bhittai, Pavon, SKD-1, TD-1, Kiran, Marvi and Mehran.Results indicated significant effect of water stress on stomatal dimension, stomatal conductance, relative leaf water content and grain yield with no effect on stomatal density. The irrigation × cultivars interaction was non-significant for grain yieldonly. Cultivars like Anmol, Moomal, Bhittai, Sarsabz proved to be drought tolerant with smaller stomatal dimensions, less stomatal conductance and more relative water content under water stress and produced higher grain yield. While decrease in relative water contents and grain yield, and increase in stomatal attributes was observed in drought susceptible cultivars such as Marvi,TD-1 and SKD-1 hence proved to be drought susceptible.

Publication Details

Page(s) 945-950

DOI DOI not available

Published Journal: International Journal of Agriculture and Biology, Volume: 15, Issue: 5, Year: 2013

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