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Breeding apples with durable disease resistance

Kellerhals, Markus; Kesper, Cornelia; Koller, Bernhard and Gessle, Cesare (2002) Breeding apples with durable disease resistance. In: Boos, Markus (Ed.) 10th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing and Viticulture. Proceedings to the Conference from 4th to 7th Feb. 2002 at Weinsberg/Germany, pp. 5-10.

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Summary

Apple cultivars with high fruit quality, good productivity and durable disease and pest resistance are highly required in ecological Fruit growing. In the past apple breeders mainly used single resistance genes giving good field resistance towards scab and mildew. They originate from wild species such as Malus floribunda 821, M. zumi and M. robusta. However, this type of resistance can be overcome by new pathogen races. Today the main emphasis is on the combination of functional different major resistance genes and the use of quantitative resistance to achieve durability. Molecular markers were developed which particularly permit the detection of major resistance genes. The combined presence of the target resistance genes in a seedling can be determined by marker-assisted selection (MAS). Currently similar markers for loci on the genome which determine quantitative resistance (QTL) are being developed. Benefits and limits of durable disease resistant variety in organic Fruit growing will be discussed.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Apple, breeding, Venturia inaequalis, Podosphaera leucotricha, molecular markers
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries
Research affiliation: International Conferences > 2002: Ecofruit
Related Links:http://www.ecofruit.net
Deposited By: Tagung, Ecofruit
ID Code:14584
Deposited On:31 Oct 2008
Last Modified:26 Aug 2010 09:29
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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