Physiological responses of rosemary (Rosmarinus officinalis L.) to salinity and copper nutrition in a nutrient solution

Salinity and copper deficiency are two factors that inhibit plant growth. This study was conducted to investigate individual and combined effects of salinity and copper nutrition on growth, leaf relative water content and nutrient uptake of rosemary (Rosmarinus officinalis L.).

A factorial arranged hydroponics experiment with three salinity levels of irrigation water (0, 50, and 100 mM NaCl), and three levels of copper (0, 0.05, and 0.1 μM, as CuSO 4) was performed. Salinity significantly decreased growth of rosemary while Cu nutrition showed positive effect on the crop growth. Leaf and root Na + and Clconcentration increased by salinity while reduced by copper nutrition. Root and leaf concentrations of Ca2+ and K+ were lower in the plants grown at 50 and 100 mM NaCl treatments in comparison with those grown at 0 mM NaCl treatment. Increasing Cu concentration in the nutrient solution increased leaf and root Ca 2+ and K+ concentration. The results indicated that copper might play an important role in increasing rosemary tolerance to salinity stress.

Copyright: © Aristotle University of Thessaloniki
Quelle: 2nd International Conference 2009 (Juni 2009)
Seiten: 6
Preis inkl. MwSt.: € 5,00
Autor: Dr M. Hejazi Mehrizi
Hossein Shariatmadari
Amirhossein Khoshgoftarmanesh
Mohammad A`li Meshkat

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