engleski

Leaf ion concentration and biomass allocation of domestic and introduced olive cultivars as affected by NaCl stress

Seedlings of olive cultivars from Croatia, Italy, and Spain were exposed to NaCl stress (0, 33, 66, 100, or 166 mM NaCl) during three months. Leaf Na+ concentration was increased and K+:Na+ ratio decreased as salinity of substrate was increased. At 166 mM NaCl ‘ Oblica’ accumulated less Na+ and was able to keep a higher K+:Na+ ratio than ‘ Leccino’ and ‘ Manzanillo’ . The root portion of plant increased and shoot portion decreased with salinity for all cultivars but Lastovka. At shoot level, as salinity increased leaf ratio increased at the expense of stem ratio. These results were not confirmed by allometric analysis, yet direct effect of cultivar on shoot biomass allocation pattern was observed.

allometry; K:Na ratio; Olea europaea; salinity; tolerance

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