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DOWNY MILDEW IN ROSES: STRATEGIES FOR CONTROL

Article number
870_21
Pages
163 – 170
Language
English
Abstract
Screening of 183 wild rose accessions with downy mildew isolates resulted in the identification of 19 resistant accessions.
Three of the resistant accessions were tetraploid and belong to the section Cinnamomeae. Crosses were made in spring 2007 between ornamental and the selected tetraploid wild roses to transfer the resistance genes into breeding material.
The F1 progenies from the cross 07/57 between resistant R. majalis 93/09-01and susceptible ‘König Stanislaus’ and from cross 07/44 between resistant R. pendulina D57001 and ‘Aprikola’ segregate for resistance to single spore isolate 3-16. Histochemical staining revealed the hypersensitive response to be one of the main features of resistance in the population 07/57.

Publication
V International Symposium on Rose Research and Cultivation
Authors
D.F. Schulz, T. Debener
Keywords
Peronospora sparsa, resistance, hypersensitive reaction, wild roses, breeding
Full text
https://doi.org/10.17660/ActaHortic.2010.870.21
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