Mapping of fire blight resistance in Malus ×robusta 5 flowers following artificial inoculation.

ABSTRACT:

Background

Although the most common path of infection for fire blight, a severe bacterial disease on apple, is via host plant flowers, quantitative trait loci (QTLs) for fire blight resistance to date have exclusively been mapped following shoot inoculation. It is not known whether the same mechanism underlies flower and shoot resistance.

Results

We report the detection of a fire blight resistance QTL following independent artificial inoculation of flowers and shoots on two F1 segregating populations derived from crossing resistant Malus ×robusta 5 (Mr5) with susceptible 'Idared' and 'Royal Gala' in experimental orchards in Germany and New Zealand, respectively. QTL mapping of phenotypic datasets from artificial flower inoculation of the 'Idared' × Mr5 population with Erwini

SUBMITTER: Peil A 

PROVIDER: S-EPMC6889339 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature