نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران
2 گروه علوم و مهندسی خاک دانشگاه رازی- کرمانشاه
3 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The use of chelating agents has been introduced as a suitable strategy to reduce the detrimental effect of heavy metals in plants. To investigate the impacts of aspartic acid (AA) and glutamic acid (GA) in alleviating lead (Pb) stress in lemongrass (Dracocephalum ruyschiana), a factorial experiment was conducted based on a completely randomized design with three replications, in the greenhouse of Razi University, in 2023. The treatments included Pb contamination at three levels (0, 150, and 300 mg.kg-1 soil as Pb (NO3)2), aspartic acid (AA) at three levels (0, 100, and 200 mM), and glutamic acid (GA) at three levels (0, 100, and 200 mM). Both acids were used as foliar application. The results showed that the highest proline content (8.12 μmol.g-1) and soluble sugars (2.94 mg.g-1) were obtained in 300 mg.kg-1 of Pb, without AA and GA, which shows an increase of 320% and 285%, respectively, compared to the control (without Pb and chelating agents). Also, the highest amount of shoot and root dry weights, plant height, root length, and volume were found in the treatment of 200 mM of AA and GA, and without Pb. In general, AA and GA, as foliar spray could significantly reduce the adverse effects of Pb on the crop growth characteristics. Thus, application of these chelating agents is a convenient method to diminish the effect of Pb stress on lemongrass.
کلیدواژهها [English]