Title : How Tamarix grows and reproduces in the Iranian desert
Abstract:
Halophytes and halophilic plants are plants that can naturally grow, develop, and reproduce in saline-sodic soil due to the presence of salt tolerance genes that have evolved throughout history. For this reason, halophytes are proposed as the main plants for exploitation and cultivation in saline lands all over the world. Considering that Gaz, from the family of woody halophytes, is very resistant to salt and saline soil and has high economic value. Understanding the mechanisms of salt tolerance in Gaz and identifying the key genes involved is important for improving saline lands and increasing salt tolerance of agricultural products. In this study, 8 field-grown Tamarix plants were irrigated with 3% (180 mM) salt for one month. Measurements of Electrical Conductivity (EC), physiological parameters such as stomatal conductance, stem length, leaf cover volume, chlorophyll content, and plant growth were performed on salt-treated and control plants. In the species Tamarix, the results showed that the physiological parameters of the plant showed that the plant species grown under sandy soil texture were more affected by salt exposure than the plant grown in loamy texture. Therefore, considering the greater tolerance of Tamarix to salt and/or water stress and the strict environmental regulations, the planting of native Tamarix species remains a preferred plant over non-native Tamarix around the deserts of Semnan province. The sycamore tree secretes salt during hot days, a process that causes water to evaporate. During the night, the salt absorbs moisture from the air on the underside of the leaves. In the morning, the accumulated moisture evaporates, creating a kind of natural air conditioning. This cooling effect is another reason for its popularity as an ornamental tree. Since the sycamore tree is an evergreen species, it is often used to beautify paths and parks. Also Our results have shown that in general the number of trees planted per hectare varies from 1000 to 2500, but their number will vary greatly depending on the tree species and the type of planting.
Keywords: Halophyte, Tamarix, Tolerance, Salin Soil
