بررسی تغییرات پارامترهای رویشی گیاه دارویی پونه تحت تاثیر سطوح مختلف مس و روی

Copper (Cu) and Zinc (Zn) are micronutrients essential for plant growth, but high concentration of these metals as a heavy metlas suppressed the plant growth. This experiment was done as a factorial on the basis of completely randomized design with 3 replication in the soil science department of university of Tehran. The treatments consisted of three levels of Cu (0, 5 and 25 mg/Kg CuSO4) and three levels of Zn (0, 10 and 50 mg/Kg ZnSO4) and their combination. Plant measured characteristics including leaf area, plant height, shoot and root dry weight and chlorophyll. Results showed that Cu and Zn at 5 and 10 mg kg -1 caused increased and at 25 and 50 mg kg -1 caused decreased but no significant in measured indices comparing to control. The highest of the growth parameters was obtained by application of in combined treatment of 5 mg Cu Kg-1 and 10 mg Zn Kg-1and the lowest values of them treatment in treatment 25 mg Cu Kg-1 and 50 mg Zn Kg -1. Application of optimal levels of Cu and Zn in growing of pennyroyal was recommended.