31 records found

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  Determination of resistance of wheat and triticale to Puccinia triticina, the agent of leaf rust, in the frame of official seed testing for variety release

  Term: 2008-01-01 bis 2023-12-30
  • Project coordinator:
    Albrecht, Serfling
    
  • Cooperation partner:
    Bundessortenamt Hannover
    
  • Overall objective of the project:
    The project aims at the characterization of the resistance of released cultivars and of new breeding strains accepted for official testing. The tests of resistance are carried out (a) in field trials with four replications after artificial inoculation with a mixture of virulent rust-isolates. The disease severity is evaluated at least three times at intervals of one week by recording the percentage of the leaf area covered with pustules within one plot. Multiple readings allow the calculation of a disease progress curve for each genotype tested. In addition, the genotypes are tested (b) at the seedling stage with two replications. For this purpose three to six single spore isolates are used with defined and different virulence patterns. These tests provide information about seedling resistance as well as about infection types. In the case of isolate x genotype interactions resistance genes can be identified. The results contribute to the decision of variety release of the Federal Seed Board.

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  Determination of resistance of spring and winter barley to Puccinia hordei in the frame of official tests for variety release

  Term: 2008-01-01 bis 2027-12-31
  • Project coordinator:
    Albrecht, Serfling
    
  • Cooperation partner:
    Bundessortenamt Hannover
    
  • Overall objective of the project:
    Characterization of cultivars and candidates of winter and spring barley for resistance to Puccinia hordei; identification of qualitative resistance in seedling tests with defined isolates and of quantitative resistance by determination of the area under.

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  Investigations of the epidemiology of aphids. Monitoring of flight activity of aphids in suction and yellow traps in relation to the natural occurrence of aphids in wheat and barley accessions in the field

  Term: 2008-01-01 bis 2023-12-31
  • Project coordinator:
    Torsten, Will
    Tim, Ziesche
    
  • Overall objective of the project:
    The project aims at the detection of new species potentially endangering crop production and the establishment of a data base to get information on the influence of global climatic and environmental changes on the epidemiology of aphids. Thereby risk assessment for aphid pests and aphid transmitted plant viruses are facilitated providing the basis for the reduction of insecticide sprayings. Flight activity of aphids is monitored in a suction trap and a yellow water trap. Using stadardized traps enable the establishment of a EU-wide database. By determination of the trapped aphid species their flight activity is characterised and new species detected. Comparison of the flight activity and the natural occurrence of aphids in field plots allows a more accurate estimation of the resistance degree of wheat and barley genotypes.

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  Durable conservation of defined isolates of fungies, viruses and bacteria

  Term: 2008-01-01 bis 2027-12-31
  • Project coordinator:
    Albrecht, Serfling
    
  • Overall objective of the project:
    For the evaluation of genetic resources with respect to resistance the availability of defined pathogenic isolates is a prerequisite. The collection of pathogens has to be updated permanently. New strains must be isolated and classified according to their virulence and race specifity. Special methods for long time storage have to be applied to maintain the characteristics and to have pathogenic isolates available for epidemiological and resistance studies within the BAZ as well as for scientific and commercial institutions.

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  Development of a national evaluation program of plant plant genetic resources of cereal crops (EVA II)

  Term: 2008-01-01 bis 2027-12-31
  • Project coordinator:
    Albrecht, Serfling
    
  • Cooperation partner:
    ZADI-Zentralstelle für Agrardokumentation
    Gemeinschaft zur Förderung von Pflanzeninnovation e. V. (GFPi)
    
  • Overall objective of the project:
    The project has been conducted since 2001 by BAZ, ZADI, GFP and numerous breeding companies. It contributes to establishment of durable structures for the evaluation of plant genetic resources in breeding and research. By that means the efficiency of German evaluation activities will be increased and the durable exploitation of plant genetic ressources in breeding and research will be guaranteed. Based on the establishment of a cooperative network for the evaluation of plant genetic resources of main cereal crops, i.e., wheat and barley, a multilocal evaluation systeme will be established. To some extent molecular markers will be integrated in the evaluation of genetic resources. The generated evaluation data are transferred to the national system of documentation for plant genetic resources and are accessible for all participants and later on to the public.

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  Genomics-based exploitation of wheat genetic resources for plant breeding, GeneBank2.0

  Term: 2019-11-01 bis 2022-10-31
  • Project coordinator:
    Frank, Ordon
    Albrecht, Serfling
    
  • Project preparer:
    Albrecht, Serfling
    
  • Cooperation partner:
    Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) Gatersleben
    Universität Hohenheim
    Gemeinschaft zur Förderung von Pflanzeninnovation e. V. (GFPi)
    Limagrain GmbH
    KWS Lochow GmbH
    
  • Overall objective of the project:
    The overall goal of GeneBank2.0 is to leverage the wheat ex-situ collection hosted at the IPK Gatersleben to an actively deployed one in plant breeding by applying an integrated concept encompassing cutting-edge genomics, phenomics, biodiversity informatics, and precision (pre)breeding.

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  Uncovering barley yellow mosaic virus strain - resistance gene interaction

  Term: 2019-05-01 bis 2022-06-30
  • Project coordinator:
    Antje, Habekuss
    Dragan, Perovic
    Frank, Ordon
    
  • Cooperation partner:
    National Agriculture and Food Research Organization
    
  • Overall objective of the project:
    The aims of the projects are (1) to get an overview about the barley yellow mosaic virus strains present in Germany and Japan, (2) to develop an effective inoculation method for BaYMV, (3) to get information about the interactions between the virus strains (isolates) and the 20 known resistance genes and (4) to isolate the BaYMV resistance derived from HOR4224.

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  Identification of resistance parameters/mechanisms of sugar beet (Beta vulgaris) against the aphid species Myzus persicae and Aphid fabae.

  Term: 2020-01-01 bis 2022-12-31
  • Project coordinator:
    Torsten, Will
    
  • Project preparer:
    Torsten, Will
    
  • Cooperation partner:
    KWS Saat AG
    
  • Overall objective of the project:
    

    The aim of the project is to identify resistance against the two aphid species Myzus persicae and Aphid fabae and thus to create the basis for a later genetic mapping of the resistance. This will be achieved with the help of a broad methodological approach, with entomological methods clearly in the foreground. In addition, a comparison of the results of the aphid species investigated should show whether the resistances observed here is general or whether there is a specific resistance based on an interaction of aphid species-specific effectors (Rodriguez et al., 2017) and plant R proteins. Beside this, the study aims to assess different entomological methods in terms of informative value, comparability and cost-effectiveness with regard to an economically-based screening. It should also be considered, which influence environmental factors and cultivation conditions (greenhouse vs. field) have on some of the methods as well as on the tested resistance.