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      • KCI등재

        Effect of Light Intensity on Leaf Morphology, Photosynthetic Capacity, and Chlorophyll Content in Sage (Salvia officinalis L.)

        Sedigheh Rezai,Nematollah Etemadi 한국원예학회 2018 원예과학기술지 Vol.36 No.1

        Sage (Salvia officinalis) has been an important medicinal plant since antiquity. Here, we aimed todetermine the optimum light intensity for S. officinalis growth by quantifying the effects of differentshade treatments on plant morphology, chlorophyll and carotenoid content, and photosyntheticcapacity in a semi-arid region of Iran. Plants were grown for 5 months under full sunlight (0%shade) as well as 30%, 50%, or 70% shade levels by applying different shade treatments. While leafsize was greatest under 50% shade level, leaves of seedlings grown under full sunlight weresmallest. Leaf color under both 50% and 70% shade levels was yellowish-green. The highestphotosynthesis activity was achieved under full sunlight. Decreasing light intensity led to anincrease in chlorophyll and carotenoid content. Shade levels above 30% limited carbon assimilationand led to decreased essential oil content and plant growth. In conclusion, 30% shade is suggestedto be an optimum light irradiance for the cultivation of S. officinalis.

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