Abstract
Physiological tolerance to saline conditions was investigated in eight salt-tolerant, one salt-sensitive genotypes, and in one commercial tomato cultivar. The physiological parameters, leaf water potential, and osmotic potential, leaf temperature, stomatal conductivity, chlorophyll-SPAD reading, and leaf membrane injury were studied. The relationships of these parameters with each other were evaluated. Experiments were conducted in two different locations at the same time. A farmer’s field in the Eskisehir-Muttalip region was considered as salty soil (soluble salt 0.38%) it contained natural salts, and the Transitional Zone Agricultural Research Institute field was considered as control soil without salt (soluble salt 0.07%). It was found that the leaf water potential, osmotic potential, and stomatal conductivity were decreased, whereas the leaf temperature, chlorophyll-SPAD reading, and leaf membrane injury were increased. We have observed significant correlations among the physiological parameters, and these correlations would be useful for screening of tomatoes for tolerance to salt stress. Among the physiological parameters, leaf water potential, leaf osmotic potential, and leaf stomatal conductivity of the genotype Tom148 showed the best performance, whereas the commercial cultivar (BT236F1) was the most negatively affected genotype in the salty field.
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Funding
We would like to express our sincere thanks to the Scientific and Technological Research Council of Turkey (TUBITAK) (Project no. TOVAG113O185) and Cukurova University Scientific Research Projects Coordination Unit BAP (Project no. ZF2013D6) for their financial support.
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Mahmut Bayram, Hayriye Yildiz Dasgan Useful Parameters and Correlations for Screening of Tomatoes to Salt Tolerance under Field Conditions. Russ. Agricult. Sci. 46, 451–458 (2020). https://doi.org/10.3103/S1068367420050122
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DOI: https://doi.org/10.3103/S1068367420050122