نتایج جستجو برای: festuca ovina l

تعداد نتایج: 619739  

Journal: :Molecules 2017
Chenglin Zhang Jianbo Zhang Yan Fan Ming Sun Wendan Wu Wenda Zhao Xiaopeng Yang Linkai Huang Yan Peng Xiao Ma Xinquan Zhang

Glaciation and mountain orogeny have generated new ecologic opportunities for plants, favoring an increase in the speciation rate. Moreover, they also act as corridors or barriers for plant lineages and populations. High genetic diversity ensures that species are able to survive and adapt. Gene flow is one of the most important determinants of the genetic diversity and structure of out-crossed ...

ژورنال: :مرتع 0
علی محمد شریفی mohammad ali sharifi nourنور قاسمعلی دیانتی تیلکی ghasemali dianatitilaki nourنور سید جلیل علوی seid jalil alavi nourنور

این تحقیق در مراتع استان مازندران، حوزه آبخیز گلندرود انجام شد. هدف این مطالعه بررسی عکس­العمل f. ovina نسبت به برخی متغیرهای محیطی با استفاده از تابع hof بود. برای انجام این تحقیق 150 پلات یک متر مربعی در طول گرادیان ارتفاعی برداشت شد. روش نمونه­برداری تصادفی- سیستماتیک بود. در هر سطح نمونه­گیری حضور و عدم حضور گونه، ارتفاع از سطح دریا، شیب و جهت دامنه ثبت شدند. نمونه­های خاک از عمق 20-0 سانتی...

ژورنال: :تحقیقات مرتع و بیابان ایران 2015
سیدتقی میرحاجی فرهنگ قصریانی فرهاد آژیر

یکی از فاکتورهای مهم در تعیین ظرفیت چرایی، مشخص کردن حد بهره برداری مجاز گونه ها می باشد. این بررسی جهت تعیین بهترین شدت برداشت علوفه گونه هایbromustomentellus l.festucaovina, و stipahohenackeriana درمراتع نیمه استپی سرد کوهستانی فیروزکوه در طول سال های 85 تا 89 به اجرا درآمد. تیمارها شامل شدت های مختلف برداشت 25، 50 ، 75 درصد و شاهد بودند. در سال اول محدوده ای به مساحت یک هکتار انتخاب و حصارکش...

Application of strategies induced a heavy metal tolerant turfgrass is necessary for cultivation management. Water and soil contamination with heavy metals is an increasing concern for the human and environment health. This study was conducted to evaluate the mitigation of environmental Cd toxicity through landscape turfgrasses as affected by two arbuscular mycorrhizal fungi (AMF) species and to...

In order to evaluate and compare the yield of mixed and pure range land species, this research was carried out of semi-Arid of Gonbad Kavous. The plan was designed complete Blok with three replications in crop year of 2012-2013. The treatments were with 5 levels of monoculture planting pattern included, Festuca ovina L, Festuca arundinacea Schreb, Medicago scutellata L, Agropyron elongatum Anal...

Journal: :Plants 2023

Nature-based solutions are promising for climate adaptation and environmental management in urban areas, but conditions stressful vegetation. In particular, the interaction of drought high temperatures may be detrimental. Guiding plant selection greening with native species requires a far better knowledge adaptations stress acclimation. We tested physiological responses four candidate calcareou...

2016
Jack E. Staub Matthew D. Robbins Yingmei Ma Paul Johnson Paul G. Johnson

Continued reduction in limited natural resources worldwide increasingly necessitates the incorporation of low-maintenance and low-input plant materials into urban landscapes. Some fine-leaved Festuca grass species have been used in formal gardens and native urban landscapes because of their inherent tolerance to abiotic stresses, but native, ornamental types (tall and non-spreading with multico...

2015
Sue E. Hartley Rob N. Fitt Emma L. McLarnon Ruth N. Wade

Understanding interactions between grasses and their herbivores is central to the conservation of species-rich grasslands and the protection of our most important crops against pests. Grasses employ a range of defenses against their natural enemies; silicon-based defenses have been shown to be one of the most effective. Silicon (Si) is laid down on the leaf surface as spines and other sharp bod...

2015
Catherine H. Ravenscroft Raj Whitlock Jason D. Fridley

Genetic diversity may play an important role in allowing individual species to resist climate change, by permitting evolutionary responses. Our understanding of the potential for such responses to climate change remains limited, and very few experimental tests have been carried out within intact ecosystems. Here, we use amplified fragment length polymorphism (AFLP) data to assess genetic diverg...

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