ABSTRACT
Background: Application of bio-stimulants is one of solutions to quantitative and qualitative changes in metabolites of medicinal plants sprouts
Objective: The aim of this study is to investigate the effect of chitosan bio-stimulation on trigonelline content of sprout under water stress
Methods: This study was conducted in three separate factorial experiments [three times of 4, 8 and 12 days after planting] based on completely randomized design with 15 treatment in 3 replications. The treatments were chitosan in five levels [0, 0.05%, 0.1%, 0.2% and 0.4%] and water stress in 3 levels [control without stress treatment, -0.2 and 0.4 Mpa]
Results: The result of variance analysis showed that chitosan, under stress and interaction effect of chitosan and water stress had significant effect on trigonelline content of 4, 8 and 12-day sprout. The trigonelline content decreased during the experiment in a way that the highest content of that was observed at the first days of seed germination
Conclusion: By induction of water stress and application of chitosan with optimum amount [to 0.2%] decrease in trigonelline content attained to the lowest trend during the experiment
ABSTRACT
Background: Ocimum basilicum L. belongs to the Lamiaceae family. Its essential oil is antibacterial and anti-fungi it is used an appetizer and counterfeit. Methanol spraying as a source of providing carbon for C3 plant, can increase the plant yield, and its rate of ripping it can decrease the effect of water stress
Objective: The present study was conducted to investigate the effect of foliar application of methanol and nano-iron chelated fertilizer on phytochemical and morph physiological characteristics of basil
Methods: In this research, the factorial experiment in a randomized complete blocks design with 20 treatments and 3 replications was carried out. The treatments of this experiment were consisted of five levels of Methanol [0, 10, 20, 30, and 40 %] and four levels of Nano-iron chelate [0, 0.5, 1, 1.5 g/L] fertilizer
Results: The study showed that spraying methanol with 20% volume along with 1 g/L of nanoiron chelated increased dry matter and oil yield and also increased methyl-cahvicol and Caryophyllene in Basil. Results showed that activity of Glutathione peroxidase enzyme was increased with increasing the percentage of bio simulative methanol, while activity of polyphenol oxidase was decreased
Conclusion: Nano-iron chelated increased the activity of these enzymes. It can be concluded that higher densities of bio-simulative methanol and Nano-iron chelated increased essential oil, methylcahvicol and some other affective enzymes which decrease induced environmental stresses. Although, higher densities of them would decrease biosynthesis of neral and neryl formate
ABSTRACT
Background: Salvia multicaulis Vahl. a medicinal plant belonging to the Lamiaceae family, has an extensive application in native and traditional medicine
Objective: This research was conducted to investigate diversity of morphophysiological traits and content of essential oil, phenol and flavonoid of Salvia multicaulis ecotypes in different districts of Hamedan province, Iran
Methods: In this study, 11 ecotypes of Salvia multicaulis were collected from different districts of Hamedan Province at the full flowering stage in spring 2016 and were evaluated for their morphophysiological and phytochemical characteristics. The classification of ecotypes was done on the basis of phytochemical and morphophysiological traits by cluster analysis and correlations among quantitative traits was also conducted by Pearson method
Results: Result showed that the essential oil content had positive significant correlation with plant height, inflorescence length, dry matter of flowering branche and essential oil yield. Also there was a positive significant correlation between essential oil yield with receptacle length, flower fresh and dry matter and plant dry matter. The heighes dry weight of flowering branch and flower was related to ecotypes of Lashkardar and west of Hamedan, respectively. The maximum plant dry weight was belong to Yelfan ecotype. The most essential oil content was related to Lashkardar and west of Hamedan ecotypes. Also, the highest content of phenol and flavonoid related to Vehnan ecotype. According to the cluster analysis, 11 ecotypes were divided into two groups
Conclusion: The evaluation of morphophysiological and phytochemical traits showed that there was a considerable variation among different ecotypes of Salvia multicaulis in respect of morphophysiological and phytochemical characteristics
ABSTRACT
Background: Drying is the most common way to preserve quality of aromatic and medicinal plants. Chosen drying methods can affect on the essential oil content and composition of medicinal plants
Objective: This study aimed to assess the changes in essential oil constitutes of catnip aerial part under various drying methods
Methods: The experiment was performed as the randomized complete block design [RCBD] with 10 treatments and 3 replications. The treatments were included the freshly harvested plants, sun-drying, shade-drying, oven-drying at 35, 45, and 55 [degree]C, microwave-drying at 100 and 200 W, and initial sun-drying followed by subsequent shade-drying and oven-drying at 45 [degree]C
Results: The result indicated that the various drying methods had a significant effect [p
Conclusion: In general, the oven-drying at 55[degree]C is recommended as an effective method to dry the catnip
Subject(s)
Oils, Volatile , Plants, MedicinalABSTRACT
Background: Plant growth regulators [PGRs] have important roles in many processes such as germination, seedling growth, nutrition uptake, morphogenesis, ripening, etc
Objective: This study aimed to evaluate the effect of gibberellic acid, indole butyric acid, and methanol as plant growth regulators on morpho-physiological and phytochemical features in Thymus vulgaris L
Methods: The farm experiment based on a randomized complete block design was performed at 2014. The treatments were included G1M1 [GA3 50 ppm + methanol 20 %], G1M2 [GA3 50 ppm +methanol 40 %], G2M1 [GA3 100 ppm + methanol 20 %], G2M2 [GA3 100 ppm + methanol 40 %], I1M1 [IBA 50 ppm + methanol 20 %], I1M2 [IBA 50 ppm + methanol 40 %], I2M1 [IBA 100 ppm + methanol 20 %], I2M2 [IBA 100 ppm + methanol 40 %], G1I2M2 [GA3 50 ppm + IBA 100 ppm + methanol 40 %], G1I2M2 [GA3 100 ppm + IBA 50 ppm + methanol 40 %], and control [distillate water]
Results: The results showed that the combination of GA3 or IBA along with methanol changed significantly leaf length and width, number of branches, leaf dry weight, stem dry weight, plant dry weight, seed weight, essential oil content and thymol amount. The highest values of the most traits were observed in I1M1 treatment
Conclusion: Methanol combination with one of the GA3 or IBA can improve morpho-physiological and phytochemical traits of thyme [Thymus vulgaris L.]. Thus, the most effective PGRs combination was related to GA3 50 ppm + Methanol 20 % and IBA 50 ppm + Methanol 20 %
Subject(s)
Gibberellins/pharmacology , Butyric Acid/pharmacology , Methanol/pharmacology , Plant Growth Regulators/pharmacologyABSTRACT
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