The effects of salt-induced stress in drug-type Cannabis sativa L. (C. sativa), a crop with increasing global importance, are almost entirely unknown. In an indoor controlled factorial experiment involving a type-II chemovar (i.e., one which produces Δ⁹-tetrahydrocannabinolic acid ~THCA and cannabidiolic acid ~ CBDA), the effects of increasing NaCl concentrations (1–40 mM) was tested in hydroponic and aquaponic solutions during the flowering stage. Growth parameters (height, canopy volume), plant physiology (chlorophyll content, leaf-gas exchange, chlorophyll fluorescence, and water use efficiency), and solution physicochemical properties (pH, EC, and nutrients) was measured throughout the experiment. Upon maturation of inflorescences, plants were harvested and yield (dry inflorescence biomass) and inflorescence potency (mass-based concentration of cannabinoids) was determined. It was found that cannabinoids decreased linearly with increasing NaCl concentration: -0.026 and -0.037% THCA·mM NaCl^-1 for aquaponic and hydroponic solutions, respectively. The growth and physiological responses to NaCl in hydroponic—but not the aquaponic solution—became negatively affected at 40 mM. The mechanisms of aquaponic solution which allow this potential enhanced NaCl tolerance is worthy of future investigation. Commercial cultivation involving the use of hydroponic solution should carefully monitor NaCl concentrations, so that they do not exceed the phytotoxic concentration of 40 mM found here; and are aware that NaCl in excess of 5 mM may decrease yield and potency. Additional research investigating cultivar- and rootzone-specific responses to salt-induced stress is needed.

盐诱导的应激对药物类型的影响 大麻 L.（苜蓿），这是一种在全球日益重要的作物，几乎完全未知。在涉及II型chemovar室内控制阶乘实验（即，一个其产生Δ ⁹-四氢大麻酚〜THCA和大麻二酚〜CBDA），在开花期在水培和水培溶液中测试了NaCl浓度增加（1-4mM）的影响。在整个实验过程中，均测量了生长参数（高度，冠层体积），植物生理特性（叶绿素含量，叶片气体交换，叶绿素荧光和水分利用效率）以及溶液的理化特性（pH，EC和养分）。花序成熟后，收获植物并确定产量（干花序生物量）和花序效价（基于大麻素的质量浓度）。发现大麻素随NaCl浓度的增加呈线性下降：-0.026和-0.037％THCA·mM NaCl ^-1分别用于水培和水培解决方案。在40 mM时，水培溶液（而非水培溶液）对NaCl的生长和生理响应受到负面影响。可潜在增强NaCl耐受性的无水溶液解决机制值得未来研究。涉及使用水培溶液的商业化种植应仔细监测NaCl的浓度，以使它们不超过此处发现的40 mM的植物毒性浓度。并且知道NaCl超过5 mM可能会降低产量和效力。还需要其他研究来研究特定品种和根区对盐诱导的胁迫的反应。