ABSTRACT
Background: Hyssop [Hyssopus officinalis L.] is herbaceous perennial plants of Lamiaceae family grown in Europe, the Middle East, Asia, and Northern Africa
Objective: In this research, the effect of harvesting time was studied on essential oil, photosynthetic pigment, and some morphological characteristics of hyssop
Methods: A Field experiment was carried out during 2015/2016 at the Research farm of Payam Noor University of Marand, Iran. The experimental design was laid out as randomized complete block design with three replicates. The three harvesting time [pre-flowering, beginning of flowering and full flowering stages] were arranged in experimental plots
Results: Results indicated that the percentage of essential oil varied for 0.459 to 0.618 in different stage of plant growth. Hyssop essential oil yields increased with time and the highest value of measured traits included plant high, stem diameter, number of secondary and flowering branches, dry weight, chlorophyll [a, b and total], carotenoid, total anthocyanins and total flavonoids was obtained for collected plants in full flowering stage
Conclusion: Overall, the harvesting in full flowering stage was the best time in respect of essential oils content and morphological characteristics in hyssop
Subject(s)
Hyssopus Plant/chemistry , Oils, VolatileABSTRACT
Background: Iron is an essential micronutrient that may effect on the qualitative and quantitative characteristics of medicinal plants
Objective: The effect of foliar application of nano-iron chalate were studied on phytochemical and morpho-physiological traits of dragonhead [Dracocephalum moldavica L.]
Methods: Foliar application of nano-iron chalate on phytochemical and morpho-physiological traits of dragonhead, an experiment was performed in randomized complete block design with three replications in 2014 at Marand's Payame Noor University. Treatments were including: control [no foliar application], and foliar application of nano-iron chelate [1.0, 1.5 and 2.0 g/lit] at stem elongation and beginning of flowering stages
Results: Foliar application of 2 g/L nano-iron chelate had negative effect on most of the traits in stem elongation and beginning of flowering stages. The maximum and minimum magnitudes of content and yield of essential oil were obtained by foliar application of 1.5 and 2 g/L nano-iron chelate, respectively
The highest and the lowest amounts of chlorophyll were obtained with application of 1 g/L nano-iron chelate at beginning of flowering stage and control, respectively. The highest and the lowest amounts of flavonoid and anthocyanin were achieved by foliar application of 1.5 g/L nano-iron chelate at beginning of flowering stage and control treatment, respectively
Conclusion: Application of 2 g/L nano-iron chelate had significant effect on most of the traits. Foliar application of nano-iron chelate [1.5 g/L] not only improve the quantitative and qualitative of dragonhead traits but also it causes to move towards sustainable agriculture