| چکیده انگلیسی مقاله |
Iran is one of the arid and semi-arid regions of the world. Due to climate change in recent years, many areas in mountainous areas are at risk of soil erosion. Therefore, the study of land adaptation of plants in order to combat soil erosion in this country is of great importance. Judas-tree is a relatively drought tolerant species and its planting in the Mediterranean and semi-arid regions of the country can prevent soil erosion, especially in steep areas. In this study, in a completely randomized design, two-year-old Judas-tree potted seedlings in Bam Khorramabad nursery were exposed to drought stress (levels of 100, 60 and 30% of field capacity) for 4 months. With increasing drought intensity, the quantity of shoot growth, diameter growth, shoot dry mass and total biomass decreased but root length increased; however, there was no change in root volume and dry root biomass. Most of the measured traits in seedlings under 60% drought stress were not significantly different with well-irrigated seedlings (100% field capacity). Therefore, it can be concluded that in this nursery or similar nurseries that face water shortage, Judas-tree seedlings are able to tolerate soils with 60% field capacity and benefit from satisfactory survival and growth traits. It should be noted that in this way, the possibility of ecological rehabilitation and combating soil erosion of sloping areas of arid and semi-arid regions of the country with this shrub species is envisaged. |
