PJB-1995-42
EFFECT OF SOIL SALINITY ON LEAF DEVEWPMENT, STOMATAL SIZE AND ITS DISTRIBUTION IN COTTON (GOSSYPIUM HIRSUTUM L.)
ALl ZAFAR JAFRI* AND RAFIQ AHMAD
Abstract
Comparative effects of different salt levels (EC: 4-24 dS.m-1) on the morphology and anatomy of four cotton cultivars viz., B-557, Niab- 78, Sarmast and Qalandri was studied. A decrease in stomatal density under salt stress was compensated by an increase in stomatal size and mesophyll surface area. Adaptation to saline environment was adjusted by increasing mesophyll surface area to ensure normal exchange of gases and photosynthetic activities. In order of their salt tolerance, the cultivars studied can be rated as Niab- 78 > B-557 > Qalandri > Sarmast.
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