نتایج جستجو برای: buxus trees
تعداد نتایج: 90201 فیلتر نتایج به سال:
Title of Dissertation: MECHANISMS UNDERLYING OUTBREAKS OF SPIDER MITES FOLLOWING APPLICATIONS OF IMIDACLOPRID. Adrianna Szczepaniec, Ph.D., 2009 Directed By: Professor Michael J. Raupp, Department of Entomology Imidacloprid is a widely used neonicotinoid insecticide with high efficacy and long residual activity, and it is frequently applied to manage insect pests in urban landscapes. Recent rep...
در مطالعه حاضر بررسی کاریولوژیکی هفت جمعیت مختلف گونه Buxus hyrcana Pojark. که از مناطق مختلف کشور جمع‌آوری شده بودند ارائه شده است. نتایج نشان داد که پایه کروموزومی این گونه 14 x = می‌باشد. تمام جمعیت‌های مورد مطالعه دیپلوئید با 28= x2=n2 می‌باشند. نتایج تجزیه و تحلیل کاریوتیپی امکان دسته‌بندی جمعیت‌های مختلف گونه را از مناطق مختلف رویشگاهی و همچنین مقایسه منطقی بین آنها را فراهم نمود.
The major problems in transplanting the landscape trees are high level of mortality and low establishment rate of transplanted trees, especially in the first year. In order to achieve the best condition for successful transplanting of pine and plane trees in Isfahan landscape, the present study was carried out based on a completely randomized block design with four replicates and three treatmen...
şimşiri (B. sempervirens L.) gövde odununun anatomik özellikleri, rutubet miktarı, yoğunluk değerleri, liflere paralel basınç direnci, renk parametreleri ve yüzey pürüzlülük değerleri belirlenmiştir. Araştırma materyali Trabzon’un Çaykara ilçesinden alınmıştır. Gövde odunu, gerçekleştirilecek testler için kesilerek deney örnekleri elde edilmiş hava kurusu hale gelinceye kadar iklimlendirme odas...
The European Food Safety Authority (EFSA) was asked by the Commission to provide scientific assistance with respect evaluation of applications received concerning basic substances. In this context, EFSA's views on specific points raised during commenting phase conducted Member States and EFSA substance application for caffeineare presented. context that required in accordance Article 23 Regulat...
. Introduction Old trees are important and key elements of forest sites and are of great value in terms of forest management, reforestation, silviculture and ecology. Although old trees constitute a small percentage of forest trees, they account for a large share of forest carbon reserve and play a vital role in carbon storage. Understanding the how geographical and site distribution of thes...
Leaf Blight of Buxus sempervirens in Northern Forests of Iran Caused by Calonectria pseudonaviculata
In order to investigate the seasonal changes and the possible role of the free polyamines in the leaves and stems on the alternate bearing habit of the ‘Kinnow’ mandarin (Citrus reticulata Blanco) trees, a comparative study was conducted to analyze the levels of free polyamines (putrescine, spermidine and spermine) in the leaves and stems tissues of “on” and &ldquo...
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