نتایج جستجو برای: phragmitis australis
تعداد نتایج: 2980 فیلتر نتایج به سال:
A comparison of oomycete diversity in reed stands ( Phragmites australis ) of Lake Constance, Germany, and maize fields close by provided evidence for the occurrence of natural hybridization between Pythium phragmitis , a newly described reed pathogen, and an as-yet unknown Pythium species closely related to P. phragmitis and P. arrhenomanes . Internal transcribed spacer and β -tubulin sequence...
During a study on the occurrence and pathogenicity of oomycetes in the reed-belt (Phragmites australis) of Lake Constance (Germany), a new Pythium resembling the important cereal pathogen species complex P. arrhenomanes/P. graminicola was consistently isolated from necrotic mature reed leaves and reed rhizosphere samples. The new species proved to be significantly more aggressive towards reed l...
زنبور ساقهخوار نی، Tetramesa phragmitis (Erdös, 1952) برای اولینبار از ایران گزارش میشود. نمونههای این زنبور طی بررسی عوامل مهار زیستی گیاه نی،Phragmites australis (Cav.)(Poaceae) در استان آذربایجان غربی از ارومیه جمعآوری و شناسایی شد. این گونه، در منطقۀ Trans- Palaearctic انتشار دارد.
industrial wastewaters are of the major sources of heavy metal pollution in the environment. in the middle east, gas and oil industry is the major source of heavy metal pollution and releases significant amounts of metals into the terrestrial and aquatic environment. in this research the capability of the common reed ( phragmitis australis ) in absorbing heavy metals cd, pb and v from the waste...
Novel species of microfungi described in the present study include the following from Australia: Diaporthe ceratozamiae on Ceratozamia robusta, Seiridium banksiae on Banksia marginata, Phyllosticta hymenocallidicola on Hymenocallis littoralis, Phlogicylindrium uniforme on Eucalyptus cypellocarpa, Exosporium livistonae on Livistona benthamii and Coleophoma eucalyptorum on Eucalyptus piperita. Se...
In a 3-year-study, we analysed the population dynamics of the reed pathogen Pythium phragmitis and other reed-associated oomycetes colonizing fresh and dried reed leaves in the littoral zone of a large lake. Oomycete communities derived from internal transcribed spacer clone libraries were clearly differentiated according to substrate and seasonal influences. In fresh leaves, diverse communitie...
Background and purpose: There are limited studies on the natural systems of wastewater treatment by artificial wetlands subsurface in Northern Iran. The goal of this study was determining the efficiency of the artificial wetlands pilot system and the efficiency of horizontal subsurface flow systems for a variety of pollutants. Materials and methods: This study used artificial wetlands pilot sy...
We investigated the variations in specific leaf area (SLA) and leaf dry matter content (LDMC) of 20 species (10 annuals and 10 perennials) that have different distributional patterns in the Kerqin Sandy Land in northern China. The main purpose of our study was to determine if SLA and/or LDMC could be used as indicators of plant resource-use strategy in sand dune environments. The selected speci...
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