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Abstract
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Water and agricultural soils salinity is the major limiting factors infl uencing vegetable
production in most Iranian areas and climates. Allium ampeloprasum L. as a leafy
vegetable has been of great interest for vegetable producers in most parts of Iran.
However, due to gradual increase in soil and water salinity especially at Northwest Iran,
the production of this vegetable has been faced with many production constraints. For
the study of the salinity eff ects on some growth related and physiological traits of Allium
ampeloprasum, an experiment was conducted as a factorial based on RCBD with fi ve
NaCl concentrations (0, 40, 80, 120 and 160 mM) levels and two local clones (‘Tabriz’
and ‘Isfahan’) with three replications. Th e results revealed that there were interaction
eff ects of salinity and clonee considering proline content and K+/Na+ ratios. Th e highest
amounts of chlorophylls a and b, total chlorophyll content, and leaves fresh weight were
recorded in control plants. Na+ accumulation, MDA, H2O2 levels, soluble sugars content
and ion leakage rate were the highest with 160 mM NaCl levels. With salinity level
added, the proline accumulation in the plants was concomitantly increased.
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