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Abstract
The essential oil yield and composition of Salvia officinalis L., S. pomifera L. and two leaf variations of S. fruticosa Mill, cultivated in the same field, were determined by hydrodistillation and gas chromatography. In the analytical data statistical tests such as analysis of variance, correlation coefficient, chi-square test, t-test, and multiple correlation were applied. The results showed that there is a statistically significant difference between the species/variations for all the studied oil constituents. Also the difference is significant for some constituents between the two leaf variations of S. fruticosa. Many significant correlation coefficients and multiple correlation coefficients between the different constituents within each Salvia species were found. Some other correlations are found significant within S. pomifera only. The last ones could characterize the chemotype of this species probably.
