Portal de Periódicos da CAPES

Factors Affecting on Essential Chemical Composition of Thymus kotschyanus in Iran

2010; International Digital Organization for Scientific Information (IDOSI); Volume: 8; Issue: 6 Linguagem: Inglês

1991-6426

M Aminzadeh, F. Amiri, Et. al. Muh. Yusri Abadi, K H Mahdavi, Saeid Fadaei,

Essential Oils and Antimicrobial Activity

The objective of this research is to find the relationship between the factors of soil and the other region plants effective on the quantity and the change of the chemicals in T. kotschyanus, a typical herb geographically located in Damavand, Iran. To carry out this research, after locating the breeding ground in the region under investigation, the selected species was collected at the time of flowering. Then the related parameters such as: the population, density, production, frequency, covering crown percentage, plant height major and minor diameters measurement the plot diagram was used. As a whole 60 plot along the six 50 m. transactions were made. These plots were made diagonally and perpendicularly. In addition, the study of the soil is made by taking 15 profiles from the base of the plants. In every specimen the analysis of pH, EC, SAR, K, Na, N, CaCo and OC and the texture of the soil is measured. Data is made according to the environmental 3 features and the species, by the RDA method in the CANOCO software environment and by the multivariable regression method, the relationship between the characteristics of the species with the environmental characteristics were selected. The results of the research showed that amount of organics, phosphorous and the acidity (r =0.99) and from the species factors average and the cover percentage and the plant height (r=0.85) effected on essential oil percentage and the total compounds with SAR and pH of the soil and production of the plant had a significant difference (P<0.05). In addition, the percentage of the Carvacrol and the altitude of the region have a direct and significant effect with the plant height. The altitude of the region, organics percentage, SAR has a direct and significant effect on Timol and the percentage of nitrogen and CaCo have 3 a negative relationship with the changes of Timol.Among the factor of the species, the percentage of Timol has a direct and significant proportion with the density of the plant (r =0.99).