Influence of soil salinity on morphology, rate of carbon assimilation, photosynthetic products and enzyme activities in a sorghum hybrid CSH-5

Patil, T M and Mirajkar, P B and Hegde, B A and Joshi, G V (1983) Influence of soil salinity on morphology, rate of carbon assimilation, photosynthetic products and enzyme activities in a sorghum hybrid CSH-5. Indian Journal of Plant Physiology, 26 (2). pp. 155-162.

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Abstract

Effect of different levels of soil salinity on growth, stomatal response, 14CO2 assimilation, products of steady state photosynthesis and activity of main photosynthetic enzymes in a sorghum hybrid were investigated. Soil salinity adversely affected the photosynthetic area and rate of C assimilation. The lowered photosynthetic ability under salt stress conditions was due to stomatal closure inhibiting chlorophyll synthesis and to decreased activity of PEP and RuBP carboxylases. Excessive accumulation of malate during steady state photosynthesis could be correlated with the possible inhibition of malic enzyme. The reduction in yield was attributed to the low rate of photosynthesis and reduced synthesis of sugars. It was concluded that hybrid CSH-5 is salt sensitive and gives negligible yield with soil salinity of EC >1.6 ds/m.

Item Type: Article
Author Affiliation: Department of Botany, Shivaji University Kolhapur-416004
Subjects: Plant Protection > Control Methods
Plant Physiology and Biochemistry > Plant Physiology
Divisions: Sorghum
Depositing User: Library ICRISAT-InfoSAT
Date Deposited: 15 Mar 2012 14:15
Last Modified: 15 Mar 2012 14:15
URI: http://eprints.icrisat.ac.in/id/eprint/3899

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