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Echter Mehltau an Petersilie – Erarbeitung von Screeningmethoden für die Resistenzzüchtung

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Marx, Peggy and Gärber, Ute (2013) Echter Mehltau an Petersilie – Erarbeitung von Screeningmethoden für die Resistenzzüchtung. Poster at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

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Summary

Powdery mildew occurs increasingly on parsley during hot summer periods, which has already become the main problem in some cultures when potted. Therefore a screening system of parsley is being elaborated in a cooperation project to be able to check breeding material for resistance and develop varieties resistant to powdery mildew. The project aims to find a screening system well practicable under greenhouse conditions for a multitude of breeding material. This requires both finding optimal conditions as well as climatic factors for best infection and development of the pathogen and simple rating methods. Investigations into sporulation, germination of spores, and incubation period have revealed that they are influenced by temperature and relative humidity. 25 °C and 70 % rf have proved to be the best conditions for powdery mildew to develop most effectively. Selecting aggressive isolates is another important impact factor for screening system methods. A collection of 16 isolates sent in from all over Germany could not only show their exclusive affiliation to the genus Erysiphe but also their differences in aggressiveness. This will support an effective selection of isolates for the screening system. The remaining year of the project will see comparative studies of the aggressive isolates on 20 varieties in greenhouse and field trials to evaluate the method. Rating methods applied so far will be optimized to detect differences in the susceptibility to powdery mildew most clearly.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Petersilie, Sorten, Resistenz, Echter Mehltau
Subjects: Crop husbandry > Crop health, quality, protection
Research affiliation: International Conferences > 2013: Scientific Conference Organic Agriculture > Plant & soil
Related Links:http://www.wissenschaftstagung.de/, https://www.verlag-koester.de/index.php?id=114&tx_fbmagento
Deposited By: Marx, Dr. Peggy
ID Code:21435
Deposited On:09 Sep 2013 12:31
Last Modified:11 Nov 2013 17:45
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 12. Wissenschaftstagung erschienen.
Dr. D. Neuhoff, C. Stumm, S. Ziegler u.a. (Hrsg.)
Beiträge zur 12. Wissenschaftstagung Ökologischer Landbau
Ideal und Wirklichkeit: Perspektiven ökologischer Landbewirtschaftung
Erscheinungsjahr: 2013
ISBN-13: 9783895748158
Verlag Dr. Köster, Berlin

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