Ecophysiological characteristics of two pistachio species (Pistacia khinjuk and Pistacia mutica) in response to salinity
2001
Ranjbar, A. | Van Damme, P. (University of Ghent (Belgium). Lab. of Tropical and Subtropical Agronomy and Ethnobotany, Dept. of Plant Production) | Lemeur, R.
The changes caused by NaCl and CaCl2 induced salinity on several ecophysiological characteristics were measured in two pistachio species (Pistacia khinjuk and P. mutica). Both pistachio species are growing with almond, oak and other forest trees in different areas of Iran and they have been selected as resistant rootstocks for producing edible pistachio trees. Salinity was imposed, by adding salt (NaCl and CaCl2) to the nutrient solution to obtain conductivity values of (ECw) 6, 12 and 19 dS/m respectively. Salinity decreased leaf water potential (Yl), leaf osmotic potential (Yp), net photosynthesis (Pn), transpiration rate (E) and chlorophyll content in comparison with the control. Non-photochemical quenching (Qn) increased by increasing salinity and was higher in P. khinjuk than in P. mutica. At all of the salinity levels studied, P. mutica showed fewer changes than P. khinjuk. Finally we found that P. mutica is more tolerant to salinity than P. khinjuk
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