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.

中文翻译：

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田间条件下筛选番茄耐盐性的有用参数及相关性

摘要

在八种耐盐，一种对盐敏感的基因型和一种商业番茄品种中研究了对盐分条件的生理耐受性。研究了生理参数，叶片水势和渗透势，叶片温度，气孔电导率，叶绿素-SPAD读数和叶片膜损伤。这些参数彼此之间的关系进行了评估。同时在两个不同的位置进行实验。埃斯基谢希尔-穆塔利普（Eskisehir-Muttalip）地区的一个农民田地被视为含天然盐的盐渍土壤（可溶盐0.38％），而过渡带农业研究所的田地被视为不含盐的对照土壤（可溶盐0.07％）。发现叶片的水势，渗透势和气孔导度均降低，而叶片温度，叶绿素-SPAD读数和叶片膜损伤增加。我们已经观察到生理参数之间的显着相关性，这些相关性对于筛选番茄对盐胁迫的耐受性将很有用。在生理参数中，基因型Tom148的叶片水势，叶片渗透势和叶片气孔电导率表现最佳，而在盐田中，商业品种（BT236F1）受负面影响最大。