نتایج جستجو برای: elymus tauri
تعداد نتایج: 2214 فیلتر نتایج به سال:
در این بررسی تنوع ژنتیکی، وراثت پذیری و همبستگی ساده و چندگانه صفات در گونه Elymus tauri بررسی شد .مواد آزمایشی شامل بذر 8 جمعیت بومی بود که از استانهای آذربایجان شرقی و اردبیل جمع‌آوری گردید .آزمایش در قالب طرح بلوکهای کامل تصادفی با 4 تکرار در باغ گیاهشناسی تبریز در پائیز سال 1377 پیاده شد .در تجزیه واریانس از نظر صفات مورد بررسی تعداد پنجه بارور، تعداد کل پنجه، طول سنبله و طول برگ پرچمی و عم...
Elymus nutans and Elymus sibiricus are two important perennial forage grasses of the genus Elymus, widely distributed in high altitude regions of Western and Northern China, especially on the Qinghai-Tibetan Plateau. Information on phenotypic and genetic diversity is limited, but necessary for Elymus germplasm collection, conservation, and utilization. In the present study, the phenotypic and g...
BACKGROUND Phototropins are UV-A/blue light receptor proteins with two LOV (Light-Oxygen-Voltage) sensor domains at their N terminus and a kinase domain at the C-terminus in photoautotrophic organisms. This is the first research report of a canonical phototropin from marine algae Ostreococcus tauri. METHODS We synthesized core LOV1 (OtLOV1) domain-encoding portion of the phototropin gene of O...
Tiny photosynthetic microorganisms that form the picoplankton (between 0.3 and 3 μm in diameter) are at the base of the food web in many marine ecosystems, and their adaptability to environmental change hinges on standing genetic variation. Although the genomic and phenotypic diversity of the bacterial component of the oceans has been intensively studied, little is known about the genomic and p...
The cell cycle has been extensively studied in various organisms, and the recent access to an overwhelming amount of genomic data has given birth to a new integrated approach called comparative genomics. Comparing the cell cycle across species shows that its regulation is evolutionarily conserved; the best-known example is the pivotal role of cyclin-dependent kinases in all the eukaryotic linea...
We identified new pre-main sequence stars in the region of high-latitude molecular clouds associated with the reflection nebula IC 2118, around l ∼ 208◦ and b ∼ −27◦. The stars were selected as T Tauri candidates in objective prism plates obtained with the Schmidt telescope of Konkoly Observatory. Results of spectroscopic follow-up observations, carried out with the FLAIR spectrograph installed...
The poor angular resolution of imaging γ-ray telescopes is offset by the large reflector areas of next generation telescopes such as MAGIC (17 m diameter), which makes the study of optical emission associated with some γ-ray sources feasible. Furthermore, the extremely fast time response of photomultipliers (PMs) makes them ideal detectors for fast (subsecond) optical transients and periodic so...
In the past several months, eukaryotic genome sequencing has brought us the complete genome of the tiny green alga Ostreococcus ‘lucimarinus’ (Palenik et al., 2007) and a draft genome of the mosquito Aedes aegypti (Nene et al., 2007). Given that the genome sequence of another Ostreococcus species, Ostreococcus tauri, has been sequenced less than a year ago (Derelle et al., 2006), the availabili...
The tribe Triticeae Dumortier in the grass family (Poaceae) includes the most important cereal crops (e.g., wheat, barley, and rye) and some economically important forage grasses. Elymus L. is the largest and most complex genus in the Triticeae tribe with approximately 150 species occurring worldwide. The genomic constitutions of approximately 40% of Elymus species are unknown and some have unv...
Although the monogenomic genera of the Triticeae have been analyzed in numerous biosystematic studies, the allopolyploid genera have not been as extensively studied within a phylogenetic framework. We focus on North American species of Elymus, which, under the current genomic system of classification, are almost all allotetraploid, combining the St genome of Pseudoroegneria with the H genome of...
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