Abstract In order to generate information about the potential of ‘Biquinho’ pepper as an alternative crop for regions with limited supply of freshwater but with availability of brackish water, such as the semiarid region, a study was carried out with this crop grown in NFT (Nutrient Film Technique) hydroponic system for 120 days after transplanting (DAT). The experiment used nutrient solution prepared in water from the local municipal supply system (electrical conductivity of water –ECw = 0.34 dS m−1) and six other brackish waters prepared artificially by the addition of NaCl, with electrical conductivity of the nutrient solution -ECsol: 2.70 (control), 3.64, 4.58, 5.28, 6.09, 6.90 and 7.77 dS m−1, composing seven treatments repeated six times in randomized blocks. Fruit yield, salt tolerance and yield earliness index were evaluated. The yield of ‘Biquinho’ pepper cultivated in NFT hydroponic system, without restriction of salinity, was 2.87 kg per plant, corresponding to 46.1 Mg ha−1, considering an estimated area of 0.62 m2 per plant. A plateau followed by exponential decay model was fitted to determine the threshold salinity of ‘Biquinho’ pepper, which was 5.22 dS m−1 in the nutrient solution, corresponding to the relative potential yield. Salinity reduced the yield earliness index of ‘Biquinho’ pepper.

中文翻译：

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用微咸水水培生产“Biquinho”辣椒Linn, C. pubescens Ruiz & Pav。和 C. praetermissum Heiser & PGSM

摘要 为了获得有关“Biquinho”辣椒作为淡水供应有限但有微咸水的地区（如半干旱地区）替代作物的潜力的信息，对这种作物在 NFT 中生长进行了一项研究。 Nutrient Film Technique) 水培系统移植后 (DAT) 120 天。实验使用在当地市政供水系统的水中制备的营养液（水的电导率-ECw = 0.34 dS m-1）和其他六种通过添加NaCl人工制备的微咸水，营养液的电导率-ECsol ：2.70（对照）、3.64、4.58、5.28、6.09、6.90 和 7.77 dS m-1，包括在随机区组中重复六次的七种处理。评价果实产量、耐盐性和产量早熟指数。在不限制盐度的 NFT 水培系统中种植的“Biquinho”辣椒的产量为每株 2.87 kg，对应于 46.1 Mg ha-1，考虑到每株植物的估计面积为 0.62 m2。拟合指数衰减模型的平台以确定“Biquinho”辣椒的阈值盐度，营养液中为 5.22 dS m-1，对应于相对潜在产量。盐度降低了'Biquinho'辣椒的产量早熟指数。对应于相对潜在收益率。盐度降低了'Biquinho'辣椒的产量早熟指数。对应于相对潜在收益率。盐度降低了'Biquinho'辣椒的产量早熟指数。