نتایج جستجو برای: erysiphe quericicola on quercus sp
تعداد نتایج: 8488464 فیلتر نتایج به سال:
Im Rahmen dieser Studie soll eine Nahsensorikmethode zur Identifizierung und Quantifizierung von Pflanzenkrankheiten entwickelt werden. Die Komplexität verschiedener Pathogene einbeziehend, soll der Einfluss der Schaderreger Erysiphe graminis (Echter Mehltau) und Septoria tritici (Blattdürre) als Vertreter zweier unterschiedlicher Erregerklassen auf die Reflexion von Weizenpflanzen untersucht w...
Congeneric species often have similar ecological characteristics and use similar resources. These similarities may make it easier for them to co-occur in a similar habitat but may also lead to strong competitions that limit their coexistence. Hence, how do similarities in congeneric species affect their coexistence exactly? This study mainly used spatial point pattern analysis in two 1 hm2 plot...
The use of rice and millet has been uncovered at a few archaeological sites associated with the Shuangdun Culture (ca. 7.3–6.8 ka BP) in middle catchment Huai River, China. Nevertheless, consumption rice, millet, other types plant foods contemporaneous same region still needs supporting information from more case studies. This article examines pottery sherds ( n = 21) excavated another represen...
The main characteristics of the Quercus pollination season were studied in 14 different localities of the Iberian Peninsula from 1992-2004. Results show that Quercus flowering season has tended to start earlier in recent years, probably due to the increased temperatures in the pre-flowering period, detected at study sites over the second half of the 20th century. A Growing Degree Days forecasti...
Well-preserved silicified woods from a site near the town of Post, Oregon, western USA, provide insights into late Eocene vegetation and climate ca. 36 million years data for comparing with both older younger wood floras regionally globally. The composition this flora, taken consideration along taxa identified fruits seeds same locality, provides more complete picture former vegetation. We reco...
در این پژوهش به منظور درک سن و محیط رسوبی سازند آسماری در برش کوه شجبیل، شمال غرب یاسوج به ضخامت 375 متر 171 نمونه برداشت گردیده است. سازند آسماری در برش مورد مطالعه با معیارهای سنگ شناختی به سه واحد مشخص تفکیک شده است. این واحد ها با داشتن شمای آهک های مسیو، ضخیم، متوسط و نازک لایه، آهک های نازک لایه ی مارنی و بعضاً مارن مشخص می گردد. در این برش تعداد 18 جنس و 29 گونه از فرامینیفرهای بنتیک شنا...
Understanding the molecular basis of plant resistance to fungal diseases will contribute to reducing world-wide crop losses. One model organism for studying disease resistance is Arabidopsis thaliana, a small member of the mustard family for which complete genomic sequence information was publicly released in 2000. Erysiphe cichoracearum, the causative agent for powdery mildew disease in a wide...
In contrast to plant-animal interactions, the conceptual framework regarding the impact of secondary metabolites in mediating plant-plant interference is currently less well defined. Here, we address hypotheses about the role of chemically-mediated plant-plant interference (i.e., allelopathy) as a driver of Mediterranean forest dynamics. Growth and defense abilities of a pioneer (Pinus halepens...
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