جستجوی مقالات مرتبط با کلیدواژه « zone » در نشریات گروه « زیست شناسی »

Capers (Capparis spinosa) are one of the valuable medicinal plants that can grow in a wide range of ecological situations. In order to investigate the effect of climate on the physiological compounds of this plant, plant samples were collected in late summer with three replications from the mountainous areas of Amol city (Nemarestaq, Delarestaq and Behrestaq) at four altitudes with a difference of 150 meters (minimum altitude 850 meters). Some physiological traits of leaves and fruits were measured and analyzed by compound analysis in a completely randomized design. Data analysis showed that all the measured traits were affected by climate and were statistically significant, so that the highest amount of chlorophyll a, chlorophyll b, carotenoids, vitamin C, phenol, flavonoids, anthocyanins, antioxidants at an altitude of 1650 meters in Behrestagh region with 6.75, 10.56, 3.59, 15.60, 24.66 mg/g fresh weight, 4.51, 2.55 μmol/g fresh weight and 81.78% inhibition, respectively, and the lowest was observed at an altitude of 850 meters in Nemarstagh area. Regression slope also proved the significant relationship between traits and region and altitude, and antioxidant capacity which is the most important medicinal property of this plant, along with chlorophyll a, had the highest relationship (r² = 0.93). Also, the analysis of Pearson simple correlation coefficients showed a positive and significant effect between the traits. In general, with increasing altitude, an increase in the amount of measured physiological compounds that have medicinal effects was observed, so it is possible to develop the cultivation of some medicinal plants close to this family in the highlands.

The oceanic facies in the Southwest of Iran (Neo-Tethys), deposited between Iranian and Arabian blocks. In this study, the part of this oceanic facies have been investigated in the upper part of the Gurpi Formation and lower part of the Pabdeh Formation at Shalou section, located in southeast of Izeh. In this section, the Gurpi Formation is mainly composed of green and dark gray shale and lower part of the Pabdeh Formation consists of purple shale. For introducing index species, calcareous nannofossil assemblages and bio-zones, 82 slides have been studied at the facies which led to the recognition of nine bio-zones. As a result, 41 species and 27 genera of calcareous nannofossils According to the identified bio-zones, the age of studied section is late Maastrichtian to late Paleocene (Thanetian) and K/Pg boundary is continuous at the studied interval, that is corresponding to CC25 - CC26 , and subsequently NP1- NP7/NP8.