نتایج جستجو برای: potentilla
تعداد نتایج: 461 فیلتر نتایج به سال:
BACKGROUND Plastic root-foraging responses have been widely recognized as an important strategy for plants to explore heterogeneously distributed resources. However, the benefits and costs of root foraging have received little attention. METHODOLOGY/PRINCIPAL FINDINGS In a greenhouse experiment, we grew pairs of connected ramets of 22 genotypes of the stoloniferous plant Potentilla reptans in...
Apomixis evolves from a sexual background and usually is linked to polyploidization. Pseudogamous gametophytic apomicts, which require a fertilization to initiate seed development, of various ploidy levels frequently co-occur with their lower-ploid sexual ancestors, but the stability of such mixed populations is affected by reproductive interferences mediated by cross-pollination. Thereby, repr...
Controlled experiments show that arbuscular mycorrhizal fungi (AMF) can increase competitiveness of exotic plants, potentially increasing invasion success. We surveyed AMF abundance and community composition in Centaurea stoebe and Potentilla recta invasions in the western USA to assess whether patterns were consistent with mycorrhizal-mediated invasions. We asked whether (1) AMF abundance and ...
The present study was performed to assess the quality of Potentilla fruticosa L. sampled from distinct regions of China using high performance liquid chromatography (HPLC) fingerprinting coupled with a suite of chemometric methods. For this quantitative analysis, the main active phytochemical compositions and the antioxidant activity in P. fruticosa were also investigated. Considering the high ...
گونه Potentilla ghazniensis به عنوان گزارشی جدید از مرکز ایران معرفی میشود. این گونه با داشتن کُرکهای متنوع (بلند و کوتاه، افراشته/تقریباً گسترده) روی دمبرگ برگهای قاعدهای، خامه تقریباً انتهایی و در قاعده ضخیم و همچنین کلاله غیرگسترده قابل شناسایی است. P. ghazniensis دومین نماینده از بخش Lipskyanae در ایران است که از نظر دارا بودن خامه کوتاهتر از گونه وابسته خود P. botschantzeviana تفکیک میش...
Plenteous ethnotherapeutic properties and pharmacological actions have been attributed to Potentilla fulgens Wall. ex Hook. (FamilyRosaceae). It is one of the highly valued indigenous medicinal herbs of higher Himalaya. Biomedical reports have indicated presence of medicinally important chemical constituents represented by polyphenols, tannins, flavonoids and triterpenoids in the genus. Pharmac...
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