نتایج جستجو برای: ارس excelsa juniperus
تعداد نتایج: 3436 فیلتر نتایج به سال:
Analyses of individuals classically treated as Juniperus oxycedrus L. var. oxycedrus from Morocco, Portugal, Spain, France, Italy, Greece and Turkey, using DNA sequencing of nrDNA (ITS 1, 5.8S, ITS 2) plus RAPDs, leaf terpenoids and morphology revealed that two cryptic, genetically distinct but morphologically almost identical species are present. These species, J. oxycedrus L. var. oxycedrus a...
A hydrocarbon that is widespread in Juniperus foliage was isolated from Juniperus erectopatens (Cheng and L. K. Fu) R. P. Adams and identified as (E,E,E)-1,7-dimethylcyclodeca-1,4,7-triene (pregeijerene B). Geometry of the disubstituted double bond was determined by IR and NMR spectroscopy, while that of the trisubstituted double bonds was proven by comparison of the products of selective hydro...
Plants of Juniperus communis L. var. communis, J. c. var. depressa Pursh, J. c. var. jackii Rehdr, J. c. var. saxatilis Pall. were sampled and SNPs from nrDNA were examined. Based on these data and previous data, a new variety of J. communis is recognized: Juniperus communis var. charlottensis R. P. Adams, var. nov. It occurs in muskeg bogs on Queen Charlotte Island, British Columbia and in the...
بهمنظور بررسی وضعیت کمی و کیفی جنگلهای ارس، توده جنگلی ارس امینآباد فیروزکوه به وسعت 613 هکتار انتخاب شد. در این پژوهش قبل از نمونهبرداری از روش مونهبندی استفاده گردید، به این ترتیب نقشههای طبقات شیب، جهتهای اصلی جغرافیایی و واحدهای زمینشناسی برای منطقه بالا در محیط GIS تهیه گردید. با تلفیق نقشه طبقات شیب و جهتها، نقشه واحدهای شکل زمین تهیه و با رویهمگذاری نقشه واحدهای زمینشناسی برر...
fruit and leaves of junipers are commonly used internally as tea and pounded fruits are eaten to lower blood glucose levels in anatolia. thus, we aimed to evaluate antidiabetic and antioxidant potential and the chemical profile of juniperus foetidissima willd. and j. sabina l. in this study. in-vitro antidiabetic activities of leaf and fruit extracts were examined by their inhibitory activity o...
The composition of the essential oil from ripe and unripe berries and leaves of Juniperus oxycedrus L. ssp. oxycedrus, Juniperus phoenicea ssp. turbinata and Juniperus communis ssp. communis was analyzed by GC-MS, and microbiological assays were carried out. Samples were collected in different localities (Sardinia, Italy) and hydro distilled. The yields ranged between 2.54% +/- 0.21 (v\w dried ...
Screening new naturally occurring biologically active compounds is an effective strategy for creating a portfolio of platforms developing chemical agents against multidrug-resistant microbial strains. Actinomycetes are extremely prolific source structurally diverse secondary metabolites, most which have pharmaceutical or biotechnological significance. Among them, the genus Streptomyces stands o...
Due to the nutritional content and commercial value of its seeds, Bertholletia excelsa is one of the most important species exploited in the Amazon region. The species is hermaphroditic, insect pollinated, and its seeds are dispersed by barochory and animals. Because the fruit set is dependent on natural pollinator activity, gene flow plays a key role in fruit production. However, to date, ther...
با توجه به کم بودن مطالعات ساختاری در جنگل های اُرس (juniperus excelsa) در ناحیۀ رویشی ایران-تورانی و لزوم مطالعات ساختاری برای شناخت، احیا و توسعۀ این جنگل ها، پژوهش حاضر با هدف بررسی ویژگی های ساختاری جنگل های اُرس واقع در دامنۀ جنوبی البرز (منطقه آتشگاه شهرستان کرج) انجام گرفت. بدین منظور با طراحی شبکه ای با ابعاد 50 ×50 متر و تعیین مختصات تمام درختان به روش فاصله-آزیموت، قطر تاج پوشش درختان د...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید