Cadmium (Cd) is a heavy metal that causes oxidative stress in plants. In this study toxicity effect of Cd on Silybum marianum was investigated. Four treatments of CdCl2 (0, 300, 600, 400 and 900 μM) were evaluated in five replications using complete random design. Results of tolerance stress index severity of Cd stress on plants under various levels of treatments. Shoot dry weight, leaf area, c...

Fig is one of the first plants cultivated by humans that has global expansion. This study was conducted to investigate the physicochemical changes in different position of leaf (2 year cutting, Leaf next to immature syconium, Leaf next to ripe fruit, Leaf next to overripe fruit, Leaf next to fallen fruit) and fruit in four edible cultivars (Matti, Shah-Anjir, Sabz, Siah) as factorial experiment...

The effects of irrigation, dry farming and drought treatments on the activities of antioxidant enzymes including superoxide dismutase, ascorbate peroxidase, catalase and peroxidase in barley leaves at different generative growth stages under field conditions were investigated. Three senescence parameters including chlorophyll, total soluble protein and rubisco large subunit protein loss, were a...

Mycorrhizal fungi symbiosis with plants root through effective uptake of water and nutrients can be reduced the negative effects of salinity. To evaluate the effect of mycorrhizal fungi on some morpho-physiological traits and yield of Summer savory a greenhouse factorial experiment was conducted based on randomized complete block design with three replications at the Laboratory of Medicinal Pla...

In order to study the allelopathic potential of six medicinal plants Valeriana officinalis, Rosmarinus officinalis, Artemisia absinthium, Melissa officinalis, Juglans regia, Dracocephalum kotschyi on Beta vulgaris and its two important weeds (Convolvolus arvensis and Avena fatua) and also to find a model of natural herbicides, a factorial experiment was conducted based on randomized complete bl...

Plants are faced with various environmental stresses during their growing period. Each of these stresses have different effects on growth, metabolism and yield according to the sensitivity level and stage of the plant growth. One way of reducing the negative effects of the stresses is to use humic substances. The present study was carried out to evaluate the effects of humic acid and drought st...

Background: Carotenoids are pigments with important physiological effects in the human body that are involved in strengthening the immune system and reducing the risk of many diseases, including cancer. Objective: With regard to the importance of these substances and the high content of them in carrots (Daucus carota L.), and in order to identify the most suitable geographical area for obtainin...