The Evaluation and Determination of Chemical Compositions in the Essential of Stachys l avandulifolia Vahl. in Three Sites in Alborz Mt. (Iran)
Productivity and growth of plants in terrestrial ecosystems impress under different factors such as species genus, climate, soil environment, and geographic position. Each of these elements can highly influence on quantitative and qualitative prod uction of plants. Wood Betony (Stachys Lavandulifolia vahl) is a type of Stachys genus, belonging to the Labiatea family which amply uses in traditional and modern medicine. The goal of current research was to evaluate and determine the chemical compositio ns in essential of Wood Betony in three sites of Alborz Mt. (Iran) In order to achieve the goal, aerial organs of Stachys Lavandulifolia were collected in three sites, such as western, central, and eastern section of Alborz Mt. and after shrivelling in vit ro thermal position, extracting of essence was done by Hydrodistilation The compositions of the essential were identified and analyzed using GC and GC/MS and by measuring the Retention Index and Mass spectrums Data set was analysed by one way ANOVA metho d in SPSS v.17 software. It was also used Duncan method to grouping of variables. Results showed that efficiency of essence from Stachys Lavandulifolia vahl. in three sites was between 0.48+ 0.01 to 0.63+ 0.01. The maximum chemical composition was for eastern Alborz site with 72 combinations and the least was for western Alborz section with 58 syntheses. Central Alborz section, however, had 67 formations and located between others sites. The percentage of essential weight for eastern, western, and central Albo rz was respectively 95.53, 96.93, and 96.49. Comparing of essential compositions in three sites showed that the syntheses amount of essence in this plant was different. As for ecological requirements of Stachys Lavandulifolia the western Alborz site had de sirable circumstances to growing of this plant because it has semi cool humid climate, more rainfall, less temperature, and karstic formation along with clay sandy silty soil texture. Hence, it had the best productivity of essential quantity and quality an d consequently the highest effective combination.