| Pak. J. Bot., 18(1): 45-50. | Back to Contents | ||||
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Updated: 10-12-12 | ||||
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BIOCHEMICAL RESPONSE OF POTATO TO VARIOUS LEVELS OF SOIL MOISTURE
TENSION R. AHMAD, P. AKHTAR AND D. KHAN Abstract: Effects of soil moisture tension on yield and biochemical composition of potato tubers cv. Cardinal were investigated. Under moisture tension of 60 and 80% AWR, normal tuber initiation was affected and yield declined. Individual weight of tubers, increased under stressed conditions. Increase in water stress appeared to promote foliar concentration of chlorophyll-b associated with increase in specific gravity of the tubers. The reducing sugar content, however, behaved irregularly. There was decline in protein content, and rise in Total Glycoalkaloids (TGA) of the tubers. TGA under 80% AWR irrigation was found to cross the permissible limit deteriorating the quality of the tubers. Department of Botany, University of Karachi, Karachi-32, Pakistan. |
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