Activity of a biostimulant on the photosynthetic rate and chlorophyll content of Ocimum basilicum L. subjected to NaCl stress

Growth-promoting substances improve physiological mechanisms in plants.The objective of this study was to evaluate the effect of FitoMas-E (R) on the chlorophyll content and photosynthetic rate of basil plants grown in a hydroponic system under saline conditions. For this, three varieties of basil were studied (Napoletano, Nufar and Emily), the variables evaluated were chlorophyll a and total chlorophyll at 20, 40 and 60 days after transplantation (DPT), and the photosynthetic rate (TF) at 14, 21,45 and 60 DPT. The study was carried out under a completely randomized experimental design with a factorial arrangement of 24 treatments and four repetitions, where factor A were the varieties, factor B the NaCl concentrations (0, 50, 100 and 150 mM) and factor C, the FitoMas-E (R) doses (0 and 0.5 mL L-1). The evaluated variables decreased with increasing NaCl concentration in the three varieties, while the foliar application of the biostimulant increased the TF, when the NaCl content was severe (100 and 150 mM). A similar response to TF was found for pigment content. The results confirm that FitoMas-E (R) is a product that stimulates the concentration of chlorophylls and increases the photosynthetic rate, which helps mitigate the harmful effects of salinity (NaCl) in basil.