جستجوی مقالات مرتبط با کلیدواژه "کاملینا" در نشریات گروه "زیست شناسی"

Camelina (Camelina sativa) is a flowering plant from the Brassicaceae family. This cold-resistant plant has high nutritional value and is a multipurpose plant. Salinity stress is a growing problem in the agricultural lands of Iran and the world, which reduces the growth and development of plants. How this plant reacts to salinity stress and how to improve its resistance have been considered in this category. Various improvers have been recommended to increase resistance to stress. In this research, chitosan and iron, together with salt, have been applied to Camelina. Chitosan is one of the compounds that stimulates the plant's immune system to protect against stress factors, and the iron element plays an important role in the structure of cytochromes, photosynthesis and respiration by fixing N2. In order to implement this research, this experiment was carried out based on a randomized block design with three replications at Kharazmy Universityin 1402. In the present research, we investigated the salinity levels of 0, 8, 12 ds/m, equivalent to 0, 5.12, and 7.6 g/L of NaCl, and chitosan treatment with concentrations of 0, 0.2, and 0.4 g/L, and iron was also investigated with concentrations of 0, 3, and 6 g/l and the interaction of their different concentrations to improve growth. Following salt stress, different enzymatic antioxidants showed different reactions. The activity of the ascorbate peroxidase enzyme increased after the increase in salinity stress, and compared to the control, the activity of the peroxidase enzyme increased in the beginning compared to the control and did not record many changes, and the activity of the enzyme phenylalanine ammonia-lyase (PAL) increased with increased salinity stress compared to the control. In the combined study of the effect of chitosan elicitor and iron element on salinity stress, it was observed that chitosan elicitor improved the stress conditions by increasing the activity of peroxidase enzyme, photosnthase pigments, shoot fresh weight, and decreasing MDA and H2O2, the activity of ascorbate peroxidase enzyme and anthocyanin did not change much and this indicates that the effect of elicitor and iron element on salinity stress has improved.

The aim of this study was to investigate the effect of chemical fertilizers of nitrogen, phosphorus, sulfur and biofertilizer on some growth indicators of Camelina sativa L. experimental plant during the crop year 2016 in a farm located in Kazerun and as a factorial in the form of complete randomized block design with three replications. Treatments include fertile biofertilizer 2 containing phosphate solvent bacteria (Pseudomonas putida Strain 13P bacteria and agglomerans Pantoea Strain 5P) as the first factor in 2 levels (consumption and non-consumption) and the second factor including chemical fertilizers including control treatments, nitrogen, phosphorus, sulfur fertilizers (50 respectively). (200 and 100 kg / ha) alone were optimal and chemical fertilizer treatment was 30% less than optimal. The results showed that the application of biofertilizer was significant only on crop yield and phosphorus, sulfur and nitrogen uptake traits. Chemical fertilizer treatment was significant on all traits, and the interaction of biofertilizer treatment with chemical fertilizer on grain yield, crop yield and phosphorus, sulfur and nitrogen adsorption traits was significant. The combined use of biofertilizers with nitrogen + phosphorus + sulfur chemical fertilizer compared to control increases grain yield by 86.85%, improves crop yield of phosphorus, sulfur and nitrogen by 19.48, 12.62 and 14.90 kg / kg, respectively, and its adsorption efficiency. The elements were 42.2%, 30.01 and 36.97%, respectively. The combined use of chemical fertilizers with biofertilizer compared to control increased the leaf area index by 13.60%, increased the plant weight ratio by 23.78% and the leaf surface area. Nitrogen + phosphorus treatment compared to control showed an increase in plant growth rate of 53.64%. The best fertilizer combination in this experiment to increase the yield of whole plants was the combination of chemical fertilizer treatments containing nitrogen, phosphorus and sulfur with biofertilizers.