The objective of this study was to evaluate the growth and photosynthetic capacity of BR 1 peanut cultivar submitted to salinity. The experiment was conducted in greenhouse, using a randomized design, with four levels of salinity, expressed in electrical conductivity of solution (1.0, 3.5, 6.0 and 8.5 dS m-1), with six replications. BR 1 showed physiological mechanisms capable of ensuring their growth in environments prone to salinity. The growth of root system and stability of photosynthetic pigments were the variables related to tolerance to salinity. However, the cultivar is sensitive to salinity when the electrical conductivity is 8.5 dS m-1, affecting the stomatal conductance and photosynthetic assimilation of CO2. BR1 showed resistance to saline environments.
Arachis hypogaea; saline stress; growing; photosynthesis
