The Histology of Hybrid Poplar Clones Inoculated with Septoria musiva
نویسندگان
چکیده
منابع مشابه
Effects of Water Stress on Colonization of Poplar Stems and Excised Leaf Disks by Septoria musiva.
ABSTRACT Septoria musiva causes leaf spot and canker diseases of trees in the genus Populus, and is one of the most damaging fungal pathogens of hybrid poplar in eastern North America. The effect of host water stress on Septoria canker development was studied in two separate greenhouse experiments. Hybrid poplar clones NM6, NC11396, and NE308 were stressed by withholding water until predawn wat...
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Hybrid genotypes that arise between plant species frequently have increased susceptibility to arthropod pests and fungal pathogens. This pattern has been attributed to the breakdown of plant defenses ('Hybrid susceptibility' hypothesis) and (or) to extended periods of susceptibility attributed to plant phenologies in zones of species overlap and (or) hybridization ('phenological sink' hypothesi...
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The physical and chemical properties of poplar clones largely determine their suitability for different applications. The main objective of this study was to investigate clonal variation in four hybrid poplar clones grown at three sites in North China and identify the superior clone. Study materials were collected from four clones of hybrid white poplar: Populus tomentosa “LM50”, used as the co...
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شته‌ی مومی صنوبر، Phloeomyzus passerinii (Signoret)، در ایران و بسیاری از کشورهای جهان از آفات مهم صنوبر به شمار می‌رود. طی سال‌های 1382-1381، مقاومت و حساسیت دوازده کلن صنوبر نسبت به شته‌ی P. passerinii در استان همدان مورد بررسی قرار گرفت. تعداد کلنی‌های شته‌ی تشکیل شده در واحد سطح شاخه در طول فصل رشد در سه نوبت اندازه‌گیری شد. کلن‌های Populus alba 58/57، P. deltoides 72/51، P. deltoides missi...
متن کاملdeterminant of the hankel matrix with binomial entries
abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2007
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis-91-12-1524