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A rapidly increasing world population and the fast approaching geographical limitations of the world agriculture system have led to expansion of agricultural activities to marginal saline lands which may not suitable for crop production. So aim of the current review is to review and identify research gaps regarding the effect of salinity on photosynthesis and growth performance of avocado. Soil salinization is a serious threat to crop productivity and predicted to increase in the face of global climate change. It is one of the major abiotic constraints on agriculture worldwide, and the situation has worsened over the last 20 years due to the increase in irrigation requirements in arid and semi-arid regions. It is also one of the major factors reducing plant growth and productivity. It also cause decreases in photosynthesis. It is also one of the major factors limiting avocado production and productivity, because avocado is known to be the most saltsensitive cultivated fruit tree. Even low levels of salt inhibit the vegetative growth of the avocado shoot. In avocado production salinity stress induces a multitude of responses in plants including morphological, physiological, biochemical, and molecular changes. It reduces plant growth (both above, and belowground), stomatal conductance, photosynthetic rate, relative water content, leaf chlorophyll content, biomass accumulation and etc. It also induces interveinal leaf burn, scorch and dead tissues along the outside edges of leaves. Salinity can also seriously change the photosynthetic carbon metabolism, as well as photosynthetic efficiency. If the problem is not mitigated or any adaptation strategy is not followed the production and productivity of crop plant in general and avocado in particular will be affected at large.

Salinity and Avocado Production, A Review