Genetic analysis of rose resistance genes and their localisation in the rose genome

authored by

A. Hattendorf, M. Linde, L. Mattiesch, T. Debener, H. Kaufmann

Abstract

Among various fungal diseases of cultivated roses, powdery mildew and black spot are the economically most important ones in greenhouse and field production. Resistance breeding is an increasingly important alternative to chemical plant protection. We therefore used different approaches to characterise naturally occurring resistance to these diseases. Through extensive genetic analysis with monoconidial isolates of both pathogens in segregating populations three dominant resistance genes could be detected. Using molecular markers these loci could be mapped in the rose genome and in one case tagged on a BAC contig. We also describe the evaluation of additional loci, harbouring putative resistance genes, by mapping rose resistance gene analogues (RGAs) onto the rose chromosome map and in relation to known resistance genes.

Organisation(s)

Section Molecular Plant Breeding

External Organisation(s)

Julius Kühn Institute - Federal Research Centre for Cultivated Plants (JKI)
Universität Hamburg

Type

Conference contribution

Pages

123-130

No. of pages

8

Publication date

24.06.2004

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Horticulture

Electronic version(s)

https://doi.org/10.17660/ActaHortic.2004.651.14 (Access: Unknown)