نتایج جستجو برای: salix aegyptica
تعداد نتایج: 1745 فیلتر نتایج به سال:
در میان نمونه های جمع آوری شده جنس بید از نقاط مختلف و بر اساس نامگذاری نمونه های ناشناخته، دو گونه جدید به نامهای salix baladehensis maassoumi, moeeni & rahiminejad و s. issatissensis maassoumi, moeeni & rahiminejad شرح داده می شوند. همچنین دو گونه s. denticulata andersson و s. fedtschenkoi goerz برای اولین بار از ایران معرفی می گردند.
Many different opinions are observed if one compares the denomination of the species of relapsing fever spirochaetes by different authors. Brumpt (1) describes 14 different species in his extended Parasitology and Stitts (2) 18, but he admits the possibility of synonyms among them. Napier (3) mentions that the application of names of the countries in which the spirochaetes occur implicates the ...
LB-7. Tarek Hassanein1,⇑ Karen D. Sims Michael Bennett Norman Gitlin Eric Lawitz Tuan Nguyen Lynn Webster Zobair Younossi Howard Schwartz Paul J. Thuluvath 11 non-financial support from AbbVie, Achillion, BioCryst, Biotica, Enanta, Gilead Sciences, Idenix, Janssen, Kadmon, Merck, Novartis, Presidio, Santaris, Theravance, and Vertex. L. Webster has received consulting fees from AcelRx, Acura, As...
Two new salicin derivatives, saliglandin (1) and 6'-O-(Z)-p-coumaroylsalicin (2), along with fourteen known analogues (3-16) were isolated from the twigs of Salix glandulosa Seemen. The structures of 1-16 were characterized by the use of NMR methods ((1)H and (13)C NMR, (1)H-(1)H COSY, HSQC and HMBC), chemical hydrolysis, and GC/MS. The full NMR data assignment of the known compounds 6, 13, and...
We investigated the association between ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) fungi and pioneer woody plant species in areas devastated by the eruption of Mt. Usu, Japan, in 2000. We observed 8 woody plant species at the research site, most of which were associated with ECM and/or AM fungi. In particular, dominant woody plant species Populus maximowiczii, Salix hultenii var. ang...
In the last decade, plant ecologists have focussed more on the occurrence of positive plant–plant interactions than ever before. Especially in severe environments, such as the Arctic, species removal experiments tend to find facilitative rather than competitive effects, casting doubt on the importance of competition under extreme growing conditions. Two approaches to measure plant–plant interac...
The morphological species concept is based on morpho-logical traits, which are often subject to subjectivity or artifact. Molecular evidence is needed to test the reliability of morphological classification of taxa that are controversial and to provide appropriate taxonomic de-limitation. In this study, we used 15 single-copy nuclear loci and 2 chloroplast fragments to verify the morphological ...
جنس بید با تأسیس بیدستان در محیط یکنواخت که از قسمت های مختلف ایران جمع آوری شده بودند به طور تجربی و تاکزونومیکی کاملاً مرور شده اند. در این مطالعه تعداد کلی گونه های بید از 12 عدد به 31 گونه منفک و 7 دورگ افزایش یافته است. در این تحقیق s. issatissensis از s. excelsa var. rodonii به عنوان گونه مستقل ابقاء شده است و گونه های s. dinsmorei ،s. daviesii، s. persica و s. australior از حالت متراد...
Species of Populus are widely distributed worldwide, playing a significant role in both ecology and economy. However, the lack of single-copy nuclear markers limits knowledge about the phylogeny and population genetics of this genus. In the present study, primer pairs of 15 single-copy nuclear markers were developed through bioinformatic methods based on complete genomic sequences of Populus tr...
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