Schriften zu Genetischen Ressourcen - Genres

Establishment of a German Network for Cereal Evaluation
progress curve and the mean disease severity may be determined (Fig. 2). A reliable
estimate of the partial resistance of a given genotype requires several scoring dates
(WALTHER et al. 1996). The partners are requested to conduct three scorings for
every occurring disease; starting, when the infestation becomes apparent and then
scoring every seven to 14 days. A statistical analysis of the data is planned, following
the methodology described by MOLL (1996).
Comparison is made between the scores of the test candidates and the standards. If
no standards are available, conclusions can be drawn from comparisons with environment
minimum and maximum values. On the basis of field observations it will be
verified, if known PCR markers for different pathogens occur in the tested material.
The results are summarised and soon after harvest shared amongst the project partners
for direct use in their own breeding programmes. This network-information system
for data acquisition, overview, and provision is under development by the German
Centre for Documentation and Information in Agriculture (ZADI/IBV, Bonn).
Contracts will officially regulate the rights and duties of the partners; the most important
detail is the right of the breeders to use all material screened for their own
breeding programmes, and the obligation to score a defined minimum. Thus, the
network-information system acts on mutual benefit of all participants.
Scientists of the following institutions are either directly involved in the project or indirectly
support it with scientific knowledge on the various pathogens, on obtaining, or
multiplying material:
• BAZ, Institute of Epidemiology and Resistance, Aschersleben
• ZADI, Information Centre for Biological Diversity (IBV), Bonn
• BAZ, Institute of Resistance Research and Pathogen Diagnostics, Aschersleben
• BAZ, Plant Genetic Resource Collection, Braunschweig
• Federal Biological Research Centre for Agriculture and Forestry (BBA), Institute
for Plant Protection in Field Crops and Grassland, Kleinmachnow
• Bundessortenamt (BSA), Hannover
• Institute of Plant Genetics and Crop Plant Research (IPK), Genebank, Gatersleben
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