نتایج جستجو برای: agropyron desertorum
تعداد نتایج: 702 فیلتر نتایج به سال:
آللوپاتی به اثر متقابل گیاهان توسط مواد شیمیایی پس دادهشده ی آنها بر روی یکدیگر گفته می شود. اثر آللوپاتی گیاهان بر یکدیگر یکی از دغدغه های مهم در اصلاح و احیا ی مراتع کشور بوده که در امر مرتع کاری کمتر مورد توجه قرار گرفته است. در این تحقیق اثر آللوپاتی artemisia sieberi besser. بر روی درصد سبزشدن و وزن گیاهچه های بذریagropyron desertorum، agropyron elongatum وatriplex canescens که در اصلاح ...
Agriculture played a significant role in increasing the number of pathogen species and in expanding their geographic range during the last 10,000 years. We tested the hypothesis that a fungal pathogen of cereals and grasses emerged at the time of domestication of cereals in the Fertile Crescent and subsequently speciated after adaptation to its hosts. Rhynchosporium secalis, originally describe...
In most parts of Iran, the presence of water and soil salinity in urban area results in problems for grass growth. One way to solve this problem is the use of plant growth retardant, such as trinexapac-ethyl (TE), which is common and routine in turf management. This study was performed to investigate the response of Agrostis stolonifera L., Agropyron desertorum L. and Festuca ovina L., grown in...
The occurrence of Alyssum desertorum, a species belonging to A. sect. Alyssum, is reported for the fi rst time in Italy. It was found in Abruzzo (central Italy) in the territory of National Park of Gran Sasso and Laga mountains and surrounding areas. Morphological similarities with the other taxa recorded in Italy belonging to A. sect. Alyssum are briefl y discussed. Information about the typif...
Broom snakeweed (snakeweed) is an aggressive native range-weed found throughout arid and semiarid areas of the western United States, that increases following disturbances such as overgrazing, drought, or wildfire. Ecologically based strategies that include controlling snakeweed and reestablishing desirable herbaceous species are needed to restore productivity and diversity to invaded areas. Th...
به منظور بررسی تنوع و تشریح روابط بین عملکرد بذر و اجزای عملکرد، 31 ژنوتیپ علف گندمی (Agropyron desertorum)، در دو آزمایش آبی و دیم در قالب طرح بلوکهای کامل تصادفی با سه تکرار، در مزرعه تحقیقاتی دانشگاه آزاد اسلامی اراک مورد مطالعه قرار گرفتند. تاریخ ظهور سنبله و گرده‌افشانی، ارتفاع بوته، طول سنبله، تعداد سنبلچه در سنبله، اندازه برگ پرچم، طول پدانکل، وزن هزار دانه، تعداد ساقه در بوته، وزن بذر د...
Petroleum hydrocarbons as organic contaminants are among the materials that pollute the soil. These compounds and the resutant stress to plants limit selection of suitable species to be planted in hydrocarbon contaminated sites. The aim of this research was to determine the effects of petroleum compounds on germination and morphophysiological characteristics of wheatgrass (Agropyron desertorum)...
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