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Keywords
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Essential oil, Growth, Pelargonium odoratissimum L., Phenolic compound, ZnSO4
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Abstract
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Pelargonium odoratissimum is a perennial evergreen used as a fragrant
ornamental plant. Leaves, green branches and fresh flowers contain essential
oils, that have been shown to possess antibacterial, antifungal, antiviral, insecticidal
and antioxidant properties. In order to study the effect of foliar
spray of ZnSO4 (0, 1000, 2000, 3000 and 4000 mg L-1) on vegetative growth
and some physiological characteristics of Pelargonium odoratissimum L.
plants, a pot experiment was carried out during 2015 at the Research
Greenhouse of Azarbaijan Shahid Madani University, Iran. Vegetative growth
(plant height, fresh and dry weight) was significantly affected by the
application of ZnSO4. Foliar application of ZnSO4 promoted plant height especially
at 2000 mg L-1. Chlorophyll a, b, total chlorophyll and carotenoid
contents were affected with ZnSO4 treatment as well. The content of essential
oil was not significantly influenced with ZnSO4 spray. ZnSO4 application had
significant effect on total phenolic and anthocyanins (at 1000 and 2000 mg L-1)
and total flavonoids (at 2000 mg L-1) content.
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