pathogen populations

Listing 1 - 10 from 75 for pathogen populations

COP.html
... air in soils; infection by species of phytophthora; decrease of root energy reserves; buildup of pathogen populations; root defense decreases further; invasion spreads rapidly; top decline becomes obvious; trees begin to die ...
home.ccil.org

Verticillium Wilt of Raspberry, HYG-3027-94
... in some locations but is generally very expensive. Reintroduction of the pathogen into fumigated soils, accompanied by a rapid buildup in pathogen populations, is a major concern with using soil fumigation. Rotations (3 ...
ohioline.osu.edu

OREP - Peeling away pathogens for potato growers
... , AAFC) and Cornell University to develop methods for the identification of Streptomyces scabies - the pathogen which causes scabby lesions on potatoes. These scabs, which appear as lesions in the ... if a gene sequence, tightly linked to toxin production, can be used to quantify pathogen populations. In addition to the molecular techniques, Odumeru says other procedures for rapid identification need ...
res2.agr.gc.ca

APSnet Education Center - Introductory Topics - What are Fungicides?
... small genetic changes in fungi can overcome the effectiveness of these fungicides and pathogen populations can become resistant to future applications. Disease management strategies that rely heavily upon ... as "qualitative resistance." When fungicide resistance results from modification of several interacting genes, pathogen isolates exhibit a range in sensitivity to the fungicide depending on the ...
www.apsnet.org

Department of Botany and Plant Pathology, Oregon State University
... My research is concerned with understanding how variability in environment and in host and pathogen populations affects the development of plant disease. Results of these studies are used to develop ... . 1999. Dose-response relationships for biocontrol of plant disease and their use to define pathogen refuge size. Pages 385 -392 in: Theoretical Approaches to Biological Control, Hawkins, B.A. ( ...
www.bcc.orst.edu

The BSPP - Education
... climate changes, increasing demands are made on our limited cropping area. Ever present pest and pathogen populations continue to cause serious crop losses and, on a world scale, crop protection remains one ...
www.bspp.org.uk

The BSPP - Publications - BSPP News39 Summer 2001
... fungal diseases. Their research has the linked aims of understanding the adaptation of pathogen populations to cereals and undestanding the genetic basis of durable disease resistance. Projects in ... Imperial College for his thesis ‘The biology and epidemiology of the cobweb disease pathogen (Cladobotryum spp.) infecting the cultivated mushroom (Agaricus bisporus)’. Bruce continues to work at ...
www.bspp.org.uk More from this site

Review of Plant Pathology
... of the pathogen in rice fields is essential for rational deployment of resistance genes in rice breeding programmes. In this study, we assayed the pathotypes of the pathogen populations using ... on the NILs, indicating the difference in frequencies of avirulence genes in the pathogen populations. The data provided very useful information for formulating strategies for improving blast resistance ...
www.cabi-publishing.org

RRes - PPI Division - Pathogen Population Biology and Disease Management Programme
... the processes resulting in host specificity, pathogen variation in space and time, and the factors underlying epidemic development. Evolutionary changes in pathogen populations, such as the emergence of new ... mechanisms leading to fungicide resistance, as well as the way resistance develops in pathogen populations. The information gained from this work is helping to devise strategies to manage ...
www.rothamsted.ac.uk

APSnet Education Center - Introductions to the Major Pathogen Groups - Introduction to Parasitic Flowering Plants
... Center - Introductions to the Major Pathogen Groups - Introduction to Parasitic Flowering Plants APS Education Center Introductory Topics | Introductions to the Major Pathogen Groups Nickrent, D.L. and Musselman, L ... it is unlikely they can be used to dramatically reduce the size of mistletoe populations. Arceuthobium is native to North America, Asia, Europe, and Africa - the only mistletoe that ...
www.apsnet.org

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