نتایج جستجو برای: ed 2004 fourwing saltbush atriplex canescens seed transfer zones
تعداد نتایج: 586660 فیلتر نتایج به سال:
Insect floral herbivory can dramatically reduce plant reproductive success. Thus, plants should have evolved mechanisms that minimize the effect of insect herbivores, particularly in monocarpic species that must maximize fitness in a single flowering year. Tolerance is one such mechanism; however, few experiments to date evaluate underlying mechanisms of plant tolerance under natural conditions...
One of the methods of biological sand dune stabilization and reclamation of desert, Planting resistant species in areas of bare and covered with dry conditions. One of the plants used for the purpose of is Atriplex canescens . Considering that the successful establishment of plants in arid regions is a prerequisite for the success of the restoration area and since the medium first is where the ...
حدود 15 درصد از اراضی کشور ایران تحت تأثیر شوری قرار دارند. گونه های جنس آتریپلکس جهت کشت در این گونه اراضی از جایگاه ویژه ای بر خوردارند. این تحقیق طی سالهای 1373 تا پایان 1383 به منظور بررسی تاثیر فاصله کاشت و زمان و ارتفاع هرس بر عملکرد علوفه atriplex canescens در ایستگاه تحقیقات مرتع نودهک استان قزوین در یک طرح آماری کرت های دوبار خردشده در قالب بلوک های کامل تصادفی با سه تکرار به اجرا در...
some of arid regions problems of iran are saline and sodic soils. in improvement and reclamation of iranian arid rangelands, some foreign species of atriplex had been imported and adapted for many years ago. the most adapted species was atriplex canescens. at the present research, some environmental factors, vegetative characteristics (na, ca, mg and k), soil properties (moisture, ec, ph, solut...
Fat sand rats Psammomys obesus feed exclusively on plants of the family Chenopodiaceae, which contain high concentrations of chloride salts (NaCl, KCl) and oxalate salts. Ingestion of large quantities of oxalate is challenging for mammals because oxalate chelates Ca(2+) cations, reducing Ca(2+) availability. Oxalate is a metabolic end-point in mammalian metabolism, however it can be broken-down...
Greenhouse gases (GHG) are a serious threat to humans and environment. Greenhouse gases have been different sources, but main factors are fossil fuels, industrial processes, deforestation and agriculture. What is now more than ever before should be considered according to the role of forests and rangelands in atmospheric carbon sequestration? Carbon sequestration is to changes in atmospheric ca...
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