Salinity stress is one of the major limiting factors for agricultural production in the arid and semiarid regions. To understand salinity tolerance of canola, an experiment was conducted to determine the effects of fertilizer (optimum nutrient, 500 mg kg⁻¹ K, 2.4 mg kg⁻¹ Zn, and 500 + 2.4 mg kg⁻¹ K+Zn) and cultivar (Licord and Sarigol) on physiological attributes, chlorophyll fluorescence parameters (F_vi, F_v/F_m ratio, and area), and the concentrations of Ca, Mg, and K/Na in the root and in the shoot. The statistical analysis revealed that 500 mg kg⁻¹ K gives significantly higher F_v/F_m ratio and area, but significantly lower Ca in the roots and shoots of both cultivars. Regardless of the fertilizer, Sarigol gave higher F_v/F_m ratio. However, 2.4 mg kg⁻¹ Zn gave the highest F_vi in Licord, but the lowest F_vi in Sarigol. In both cultivars, Ca in the root and in the shoot was significantly lower in 500 mg kg⁻¹ K fertilizer. Optimum nutrient fertilizer applied to Sarigol cultivar gave the highest Mg in the root and in the shoot. K/Na values in the 8 combinations of fertilizer and cultivar were similar in the roots, but more variable in the shoots suggesting nutrient uptake differentials among the cultivars and the fertilizers. All in all, Sarigol cultivar and 500 mg kg⁻¹ K fertilizer performed better. Furthermore, F_vi and F_v/F_m parameters were demonstrated to be low cost, simple, and efficient techniques for monitoring the effect of soil salinity stress on the physiology and chlorophyll fluorescence of canola cultivars.

盐分胁迫是干旱和半干旱地区农业生产的主要限制因素之一。为了了解低芥酸菜籽的耐盐性，进行了一项试验以确定肥料（最佳养分，500 mg kg ^-1 K，2.4 mg kg ^-1 Zn和500 + 2.4 mg kg ^-1 K + Zn的肥料）和品种的影响。 Licord和Sarigol）的生理特性，叶绿素荧光参数（F _vi，F _v / F _m比和面积）以及根和茎中Ca，Mg和K / Na的浓度。统计分析表明，500 mg kg ^-1 K会显着提高F _v/ F _m比和面积，但显着降低两个品种根和芽中的Ca。不管使用哪种肥料，Sarigol的F _v / F _m比率都较高。但是，2.4 mg kg ^-1 Zn在Licord中的F _vi最高，而在Sarigol中最低的F _vi。在两个品种中，500 mg kg ^-1中的根和茎中的钙均显着降低。钾肥。施用到Sarigol品种上的最佳营养肥料在根部和枝条中的Mg最高。肥料和品种的8种组合的K / Na值在根部相似，但在芽中变化更大，表明不同品种和肥料之间的养分吸收差异。总而言之，Sarigol品种和500 mg kg ^-1 K肥料表现更好。此外，F _vi和F _v / F _m参数被证明是监测土壤盐分胁迫对油菜品种生理和叶绿素荧光的影响的低成本，简单而有效的技术。