Growth Characters, Essential Oil Content and Terpene Composition of Costmary (Chrysanthemum balsamita L.) as Influenced by Zinc Nutrition and Different Moisture Regimes
2014
Derakhshani, Zaynab | Hassani, Abbas | Sefidkon, Fatemeh
To investigate the effects of zinc nutritional treatments (1 and 2 mg kg ⁻¹ in soil application and 1 and 3 g L ⁻¹ in foliar application) and moisture regimes (2, 4 and 8 days irrigation intervals) on growth parameters and essential oil of costmary (Chrysanthemum balsamita L.), a pot experiment was conducted. Growth characteristics were significantly decreased as irrigation intervals were increased. Moreover, essential oil content and yield were significantly increased and reduced under water deficit, respectively. Zinc had an additive effect on growth parameters, essential oil content and yield. Oxygenated monoterpenes (especially carvone) were appointed as the most principle class of essential oil constituents. Regardless of zinc nutrition, the highest and the lowest carvone content were observed in 4 and 8 irrigation intervals, respectively. Zinc had also, additive effect on carvone content. The results showed that the effects of zinc and moisture regimes on oil composition appear to be variable.
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