نتایج جستجو برای: kavir
تعداد نتایج: 178 فیلتر نتایج به سال:
وجود اثر متقابل ژنوتیپ در محیط، از مشکلات عمده ارزیابی و معرفی ژنوتیپ های برتر می باشد. به منظور شناسایی و معرفی ارقام پرمحصول و در عین حال پایدار و سازگار به شرایط محیطی مناطق معتدل کشور، آزمایش بررسی سازگاری و پایداری عملکرد 20 لاین امیدبخش جو برای مناطق معتدل کشور در قالب طرح بلوکهای کامل تصادفی در سه تکرار در 9 ایستگاه تحقیقاتی طی سالهای 81-80 و 82-81 انجام و عملکرد دانه اندازهگیری شد....
In order to evaluate salinity stress effects on differential expression of metallothionein gene, chlorophyll content, TBARM and some agronomic traits in wheat, the experiment has been carried out using split factorial format based on RCBD design with 4 replications in 2008-09. The main factor included three developmental stages (tillering, stem elongation, heading) and sub factors included fact...
این پژوهش برای تعیین پایداری عملکرد بر روی 18 لاین امیدبخش جو و دو لاین شاهد شامل نصرت و MB-86-5 در شش منطقۀ معتدل شامل کرج، اصفهان، بیرجند، ورامین، زرقان و نیشابور بر پایۀ طرح بلوکهای کامل تصادفی در سه تکرار و در دو سال زراعی (1388ـ 1390) انجام شد. بعد از انجام تجزیۀ مرکب، تجزیۀ پایداری با استفاده از روش گرافیکی و چندمتغیره GGE biplot انجام شد. در این روش ژنوتیپهای 1، 2، 5 و 16 از پایداری ...
the genus alburnoides jeitteles, 1861 in iran is reviewed, and diagnoses are presented for all eight recognized species. alburnoides eichwaldii, a. holciki, a. idignensis, a. namaki, a. nicolausi, a. petrubanarescui, a. qanati and a. tabarestanensis are considered valid and three new species are described: alburnoides coadi sp. n., from namrud river in kavir basin, a. parhami sp. n., from atrak...
The genus Alburnoides Jeitteles, 1861 in Iran is reviewed, and diagnoses are presented for all eight recognized species. Alburnoides eichwaldii, A. holciki, A. idignensis, A. namaki, A. nicolausi, A. petrubanarescui, A. qanati and A. tabarestanensis are considered valid and three new species are described: Alburnoides coadi sp. n., from Namrud River in Kavir basin, A. parhami sp. n., from Atrak...
Knowledge of high resolution Y-chromosome haplogroup diversification within Iran provides important geographic context regarding the spread and compartmentalization of male lineages in the Middle East and southwestern Asia. At present, the Iranian population is characterized by an extraordinary mix of different ethnic groups speaking a variety of Indo-Iranian, Semitic and Turkic languages. Desp...
Biogeographic barriers for freshwater biota can be effective at various spatial scales. At the largest spatial scale, freshwater organisms can become genetically isolated by their high mountain ranges, vast deserts, and inability to cross oceans. Isolation by distance of aquatic plants is expected to be stronger across than alongside mountain ridges whereas the heterogeneity of habitats among p...
Drylands occupy large portions of the Earth, and are a key terrestrial biome from the socio-ecological point of view. In spite of their extent and importance, the impacts of global environmental change on them remain poorly understood. In this introduction, we review some of the main expected impacts of global change in drylands, quantify research efforts on the topic, and highlight how the art...
A total of five specimens of Allactaga hotsoni were captured in Khorasan and Yazd provinces, Iran, in summer 2004 and 2005. The specimens are similar to those described previously from Baluchistan of Iran and Afghanistan. For the first time a karyological study was carried out to make a comparison with the other species. On the basis of karyological study there is not any significant difference...
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