Physiological responses of inoculated and uninoculated peanuts under saline stress

This work evaluated the effects of water salinity on physiological indices in inoculated and non-inoculated peanut plants. The study was carried out a protected environment at seedling production unit (UPMA) Campus das Auroras, University for International Integration Afro-Brazilian Lusophony (UNILAB), Redenção, Ceará. experimental design used completely randomized (CRD), with treatments factorial arrangement, 5x2, referring to five levels irrigation - CEa: 0.5, 1.5, 3, 4.5, 6.0 dSm-1, plants mix rhizobia SEMIA 630, lot 0810, 6144, 0312, from Bradyrhizobium sp., isolated, four replications. Recommended fertilization done phosphorus (62.5 kg ha-1 P) potassium (50 K) supply nutritional needs effect caused by symbiosis sp. favored present greater tolerance salt stress. availability nitrogen collaborated increase efficiency plant mechanisms. Uninoculated plants, even higher amount chlorophyll CO2, were not efficient photosynthetic rate. Saline stress affected photosynthesis, transpiration, stomatal conductance, internal CO2 concentration, use efficiency, chlorophyll; however, less intensity when increased leaf temperature.