بررسي اثرات ناشي از تنش خشكي بر روي تغييرات قندهاي محلول، ميزان كلروفيل و پتاسيم در گياه نوروزك ( Salvia leriifolia Benth)

Effect of drought stress on variations of soluble sugar chlorophyll and pottasium in Salvia leriifolia Benth

Drought stress is considered as a major limiting factor in plant growth and development, this study was conducted to determine the effect of various levels of drought on S. leriifolia. The study was carried out as a complete randomized design with 4 replications in pot and greenhouse condition. The drought Levels were included 0,-2,-4,-6,-8Bar. Soil misture various potentials was measured using a pressure plate devise. After six weeks of drought treatment, variations in chlorophyll,soluble sugars, pottasium, fresh and dry weight of root and shoot, shoot lenght were measured. Result showed chlorophyll a,b contents ,fresh and dry weight of root and shoot and shoot lenght significantly decreased but soluble sugars content in root and leaf,potassium concentration in shoot increased with increasing levels of drought stress. Increasing of soluble sugars and pottasium content possibly indicate the establisshment of a tolerance mechanism to drought stress in Salvia leriifolia Benth.