هدف از پژوهش حاضر، سنتز، ترکیب متوکسی آمیدو زانتات MAX و نشان‌دارسازی آن با رادیونوکلیید mTc99 به عنوان یک عامل تشخیصی نوین جهت تصویربرداری توموگرافی رایانه‌ای تک فوتونی (SPECT) می­‌باشد. لیگاند فوق واکنش بین دو ماده‌ی کلرواستامید (Chloroacetamide) مشتقات (Xanthate) نسبت‌های مولی معین سنتز شد. سپس فرایند طریق دوشیدن ژنراتور (mTc99Mo/99) روش مستقیم انجام گرفت. این ترتیب که قلع کلرید کاهنده مورد ...

The study of genetic variation and phylogenetic relationships is essential for the efficient selection of superior plant material and conducting introgression breeding programs. In Iran, despite the wide geographical distribution of grasses no report is available on the genetic diversity and relationships of cool season grass populations. In this study amplified fragment length polymorphism (AF...

Amaç: Bu çalışma farklı tuz dozları (kontrol/0, 50 mM, 100 150 mM ve 200 mM) altında bazı çim türlerinin (Festuca arundinaceae L. (kamışsı yumak), Festuca rubra subsp. (köksaplı kırmızı yumak) commutata (adi yumak)) performaslarını belirlemek için yürütülmüştür. Yöntem Bulgular: Çalışmada dozlarını oluşturmak NaCl2 kullanılmıştır. Tuz dozlarına göre hazırlanan solüsyonlar çimlenme ortamına 8 mL...

Little information exists on establishment vigor differences among fine fescue taxa (Festuca L. spp.) and the effects N fertilizer levels or clover (Trifolium spp.)-inclusion during establishment. Five replicated field experiments in Indiana, Minnesota, Oregon were conducted from 2019 to 2021. Data collection continued for 9 mo after planting investigate four determine optimal fertility clover-...

Hieracium, or hawkweed species, serious weeds in South Island high country, may be controlled by appropriate pastoral management. Experimental trials at Lake Tekapo, related to S and P fertiliser rates of 0-100 kg ha-l yr-l, 27 different combinations of over-drilled and resident species and different seasons or intensities of grazing treatments on Hieracium dominated fescue tussock were conduct...

The discovery of a new specimen of Frenguelliidae, attributed to the new species Frenguellia Argentina, is noteworthy for the knowledge of the diversity within this little-known family.

The Central Plains of Western Canada comprise the Prairies Ecozone and the Boreal Plains Ecozone. The former has the most grasslands and is divided into seven ecoregions: Mixed Grassland, Cypress Upland, Moist Mixed Grassland, and Fescue Grassland in southern Alberta and Saskatchewan; Aspen Parkland, which extends in an arc from central Alberta and Saskatchewan southeast to southwestern Manitob...

We report on the evaluation of a novel grass hybrid that provides efficient forage production and could help mitigate flooding. Perennial ryegrass (Lolium perenne) is the grass species of choice for most farmers, but lacks resilience against extremes of climate. We hybridised L. perenne onto a closely related and more stress-resistant grass species, meadow fescue Festuca pratensis. We demonstra...