نتایج جستجو برای: chenopodiaceae
تعداد نتایج: 516 فیلتر نتایج به سال:
Cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone, 1), known as a host-specific attractant towards the zoospores of Aphanomyces cochlioides, a cause of root rot and damping-off diseases of Chenopodiaceae, was found in the Amaranthaceae plant, Celosia cristata, that is susceptible to the pathogen. The content of 1 in Celosia seedlings was quantified as 1.4 microg/g fresh weight. A new isoflav...
The importance of Amaranthus retroflexus pollen in causing respiratory allergy has been well ascertained in many countries including Iran with a high positive rate (69%) among Iranian allergic patients. The aim of the present study is to identify the allergenic properties of A. retroflexus pollen. Sixteen patients with allergy to A. retroflexus pollen were selected for the study. The antigenic ...
The core Caryophyllales consist of approximately 30 families (12,000 species) distributed worldwide. Many members evolved one-seeded or conjoined fruits, but their origin and structural diversity have not been investigated. A comparative anatomical investigation of the one-seeded fruits within the core Caryophyllales was conducted. The origin of the one-seeded fruits and the evolutionary recons...
ساختمان تشریحی هجده گونه از چهار جنس haloxylon , anabasis , hammada,seidlitziaاز تیره اسفناج مورد بررسی قرار گرفت. با وجود تشابهات مورفولوژیک و اشکالات موجود در تفکیک این تاکسونها بر حسب صفات مذکور،صفات آناتومی متمایز کننده ای در سطح جنس و گونه شناسایی شد. با استفاده از تاکسونومی عددی ،قرابت بین تاکسونها بررسی شده وتفکیک تاکسونها بر حسب صفات مورفولوژیک با نتایج این پژوهش تفاوتهای آشکاری داشته ...
Chenopodiaceae is a large, diverse and cosmopolitan family within the order Carophyllales. The majority of species are adapted to saline, hypersaline, xerophytic xerohalophytic communities or ruderal habitats. stenopolinous pollen grains monad exclusively polypantoporate with tiny spinules on both tectum operculum. Pollen morphology six genera (Seidlitzia, Atriplex, Bassia, Salsola, Krascheninn...
The Italian Locust, Calliptamus italicus (Linnaeus) (Orthoptera: Acrididae) , is one of the most harmful species to the grasslands in Xinjiang province, China. It attacks a variety of plants in Compositae, Chenopodiaceae and Gramineae. We used CLIMEX and ArcGIS to determine the potential geographical distribution of C. italicus in China under current and future climatic scenarios. Our analysis ...
شمارش کروموزومی 19 جمعیت متعلق به 7 جنس و 11 آرایه ازتیره اسفناج (زیرتیره salicornioideae ) از ایران گزارش می شود. کلیه واحدهای مورد مطالعه دارای عدد پایه کروموزومی 9=x می باشد. اولین گزارش کروموزومی برای گونه های halostachys belangeriana ، halopeplis pygmaea و kalidium caspicum ارائه می شود. گونه های جنس salicornia به دو گروه تتراپلویید و دیپلویید تقسیم بندی می شوند. گونه salicornia persica که...
A study was made of airborne pollen counts in Cuenca (east-central Iberian Peninsula, Spain), using data obtained over a 3-year period (2008-2010). This is the first such study carried out in the World Heritage city of Cuenca, situated in the large region of Castilla-La Mancha. Air monitoring was performed using the sampling and analysis procedures recommended by the Spanish Aerobiology Network...
Arbuscular mycorrhizal fungi (AMF) colonize land plants in every ecosystem, even extreme conditions such as saline soils. In the present work we report for the first time the mycorrhizal status and the vertical fungal distribution of AMF spores present in the rhizospheric soil samples of four species of Chenopodiaceae (Allenrolfea patagonica, Atriplex argentina, Heterostachys ritteriana and Sua...
The response of soil properties to vegetation types is still not well understood and the relationship between vegetation types and soil properties has not been quantified in highland grasslands. A field experiment was conducted in highland grassland of the Loess Plateau in China to study the distribution of soil properties under different vegetation. 22 plant communities totaling 17 species tha...
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