Research Institute of Forests and Rangelands, Botany Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran , asri@rifr-ac.ir 2- Medicinal Plants Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran 3- Department of Natural Resources and Environmental Engineering, University of Payame Noor, Tehran, Iran
Abstract: (351 Views)
Seseli staurophyllum (Apiaceae) is an endemic species of Iran, with a limited distribution in Semnan Province. In the current study, the vegetative characteristics and essential oil composition of this species in various habitats in 2022 were examined to determine the impact of environmental factors on its functional traits. Three areas with different elevations (1310–2013 m) were selected, and 15 plots were established in each area using a systematic random method. In each plot, the vegetative characteristics of this species were measured. Additionally, five soil samples were randomly collected from the plots, and some of their physicochemical parameters were analyzed. Flowering branches were collected from natural habitats with three replicates, and their essential oil compositions were determined. The relationship between functional characteristics and environmental factors was investigated using correlation analysis and principal component analysis. Variance analysis of vegetative characteristics, essential oil components, and soil physicochemical parameters showed significant differences among the three areas. The comparison of means for vegetative characteristics indicated that the highest values of plant height (109.7 cm), canopy diameter (56.3 cm), canopy cover (6.3%), leaf area (25.1 cm²), and biomass (132.1 g) were recorded in the Qalibaf area. The main essential oil components in the Qalibaf area were spathulenol (30.8%), α-longipinene (10.8%), and cedrol (8.3%); in the After area, myrcene (19.2%), (E)-β-ocimene (17.4%), (Z)-β-ocimene (7.6%), and α-pinene (7%); and in the Javin area, myrcene (24.1%), (Z)-β-ocimene (20.7%), β-pinene (10.3%), and α-pinene (10.1%). The most important factors influencing functional traits were elevation, annual precipitation, minimum temperature of the coldest month, absolute minimum temperature, gypsum, organic matter (OM), potassium (K), and clay. Furthermore, the compounds α-pinene, β-pinene, cis-carveol, spathulenol, α-longipinene, cedrol, (E)-β-ocimene, and myrcene showed the most significant correlations with environmental factors. Based on IUCN criteria, the conservation status of S. staurophyllum was determined to be critically endangered. The results of this study demonstrate that this species contains valuable essential oil components in different habitats, which can be used for medicinal purposes.
Asri Y, Sefidkon F, Rabie M. Investigating the relationship between ecological parameters and vegetative and phytochemical indices of Seseli staurophyllum Rech.f. populations. PEC 2025; 12 (25) : 12 URL: http://pec.gonbad.ac.ir/article-1-980-en.html