VARIATIONS IN GROWTH AND PHYSIOLOGY OF BARLEY UNDER CHLORIDE AND SULFATE SALINITY

Sulphate salinity, in general, was found more detrimental than chlorid e salinity in all the four cultivars, 40048 Morocco '88', Sunbar, Mari s mink and 6-Row of barley (Hordcum vulgare L.) grown in hydroponic cu ltures containing iso-osmotic chloride-, predominantly chloride- and s ulphate-, and sulphate- salinity. Amongst the cultivars, 6-Row appeare d to be more salt tolerant and Maris mink and Sunbar comparatively sal t sensitive in respect of shoot/root length and their ratio, photosynt hesis, transpiration, stomatal conductance to water vapour and sub- st omatal CO2 concentration (in 2nd leaf). Even interaction effects of cu ltivar versus treatment were prominent in cultivar 6-Row and chloride alone in the above mentioned parameters, thereby, indicating the resis tance of 6-Row under chloride salinity as well.