Evaluation of phytochemical and morphological inter- and intera ecotypes of Tucrium polium in Rangeland of Fars Province

Gorgini Shabankareh, Hossein (2014) Evaluation of phytochemical and morphological inter- and intera ecotypes of Tucrium polium in Rangeland of Fars Province. Masters thesis, University of Zabol.

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Differentiation among populations of the Iranian Teucrium polium was analyzed on the basis of morphological and phytochemical variability, to evaluate the level and distribution of diversity among four distant populations from arid, semi-arid and subhumid regions of Fars province. Morphological analysis included characters related to the plant, leaf and stem morphology. Analyses of variances and clustering have been done to establish the variability and significance of morphological differentiation. The morphological analysis of plants from the populations confirmed that the specie belongs to malacophyllous xenomorphic species and are distinguished by stable conservative xenomorphic characteristics. Morphological variation was correlated with ecological conditions at the site of origin and there is a small difference between the plants belonging to arid and semi-arid populations vs. the sub-humid ones. Chemical analysis was performed using combination of capillary GC, GC-MS after fractionation on column chromatography. The chemical composition of oil differed qualitatively and quantitatively between the populations. β-Caryophyllene was the major oils compound in sub-humid and semi- arid populations, while the main compound of arid populations were farnesene-cis-b and linalool. In addition, oil samples from semi-arid and sub-humid populations contained β-bisabolene (1.6-2.2%), myrcene (0.9-1.1%), bornyl acetate (0.7- 0.8%) and 3-octanol (0.6-0.8%), which were not detected in oil samples from arid populations. All oils sample, however were dominated by hydrocarbon compounds. The relatively low morpho-chemical diversity in the populations indicates that the maintenance of their evolutionary potential is at risk if population sizes are not maintained and if there is no protection of the habitats.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Teucrium polium, Morphology, Essential oil, Medicinal plant
Subjects: S Agriculture > SB Plant culture
Depositing User: admin admin1 admin2
Date Deposited: 06 Jun 2016 06:57
Last Modified: 06 Jun 2016 06:57
URI: http://eprints.uoz.ac.ir/id/eprint/722

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