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: (89 Views)
Seseli staurophyllum (Apiaceae) is an endemic species of Iran, which has a limited distribution in Semnan province. In the current study, we investigated the vegetative characteristics and effective substances of this species' essential oil in various habitats in 2022 to ascertain 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 of them by a systematic random method. In each plot, the vegetative characteristics of this species were measured. Also, five soil samples were randomly taken from the plots and some of their physicochemical parameters were measured. Flowering branches were also 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 that there is a significant difference between the three areas. The comparison of means of 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) are related to Qalibaf area. The main effective substances in Qalibaf area were Spathulenol (30.8%), α-Longipinene (10.8%), and Cedrol (8.3%); in After area Myrcene (19.2%), (E)-β-Ocimene (17.4%), (Z)-β-Ocimene (7.6%), and α-Pinene (7%); and in Javin area Myrcene (24.1%), (Z)-β-Ocimene (20.7%), β-Pinene (10.3%), and α-Pinene (10.1%). The most important effective factors on functional traits were elevation, annual precipitation, minimum temperature of the coldest month, absolute minimum temperature, gypsum, OM, K, and clay. Besides, the compounds of α-Pinene, β-Pinene, cis-Carveol, Spathulenol, α-Longipinene, Cedrol, (E)-β-Ocimene and Myrcene had the most significant correlation with environmental factors. Based on the IUCN criteria, the conservation status of S. staurophyllum was determined as a critically endangered species. The results of the present study showed that this species has valuable effective substances in different habitats that 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