Biotic and abiotic stresses affect plant growth and productivity. High-salinity stress affects crop yield, causing financial loss to growers. The use of salt-tolerant rootstocks is a strategy that has been used to reduce salt damage in crops. A study was conducted to evaluate the effect of salinity-resistant rootstocks on the physiological and morphological characteristics of bell pepper plants grown under greenhouse conditions. A factorial experiment was conducted using a completely randomized design with two factors. The bell pepper ‘Viper’ cultivar was grafted on two reported salinity-tolerant rootstocks (E21R10144 and E21R10197), and non-grafted (NG) plants were used as the control. Four salinity levels were applied to the plants (electrical conductivity treatments using NaCl of 2, 4, 6, and 8 dS m⁻¹) in Steiner nutritive solution (100%). The response to salinity was determined using morphological and physiological plant parameters, including fruit yield. Increased tolerance to salinity conditions (NaCl) was observed in the ‘Viper’ bell pepper grafted on E21R10144, which allowed greater plant height, stem diameter, leaf size, as well as fresh and dry biomass of both the roots and canopy. The impacts on plant physiological response, including photosynthesis, stomatal conductance, transpiration, water content, stomatal density, and foliar area, were also determined. Our results indicate that the use of the salinity-tolerant bell pepper rootstock E21R10144 maintained plant homeostasis and minimized the damage caused by salts to the morphology and physiology, as well as effects on fruit yield; thus, it is a promising tool for the management of salt stress.

生物和非生物胁迫会影响植物的生长和生产力。高盐分胁迫会影响农作物的产量，给种植者造成经济损失。耐盐根茎的使用是减少作物对盐分损害的一种策略。进行了一项研究，以评估耐盐碱砧木对温室条件下生长的灯笼椒植物生理和形态特征的影响。使用具有两个因素的完全随机设计进行了析因实验。将青椒“ Viper”品种嫁接到两个已报道的耐盐碱砧木（E21R10144和E21R10197）上，并以未嫁接的（NG）植物作为对照。将四个盐度水平应用于植物（使用2、4、6和8 dS m ^-1的NaCl进行电导率处理）在斯坦纳营养液（100％）中。对盐度的响应是使用植物的形态和生理参数（包括果实产量）来确定的。在E21R10144上嫁接的'Viper'甜椒中观察到对盐度条件（NaCl）的耐受性增强，这使得更大的株高，茎直径，叶大小以及根和冠层的新鲜和干燥生物量都可以。还确定了对植物生理反应的影响，包括光合作用，气孔导度，蒸腾作用，水分，气孔密度和叶面面积。我们的结果表明，使用耐盐性甜椒砧木E21R10144可以保持植物体内稳态，并最大程度地减少了盐对形态和生理的损害以及对果实产量的影响。因此，