naa a22 4500 510731309 CHVBK 20180411082953.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11295-012-0562-z doi (NATIONALLICENCE)springer-10.1007/s11295-012-0562-z Identification of a major QTL for Xanthomonas arboricola pv. pruni resistance in apricot [Elektronische Daten] [D. Socquet-Juglard, B. Duffy, J. Pothier, D. Christen, C. Gessler, A. Patocchi] Xanthomonas arboricola pv. pruni causes bacterial spot of stone fruit resulting in severe yield losses in apricot production systems. Present on all continents, the pathogen is regulated in Europe as a quarantine organism. Host resistance is an important component of integrated pest management; however, little work has been done describing resistance against X. arboricola pv. pruni. In this study, an apricot population derived from the cross "Harostar” × "Rouge de Mauves” was used to construct two parental genetic maps and to perform a quantitative trait locus analysis of resistance to X. arboricola pv. pruni. A population of 101 F1 individuals was inoculated twice for two consecutive years in a quarantine greenhouse with a mixture of bacterial strains, and disease incidence and resistance index data were collected. A major QTL for disease incidence and resistance index accounting respectively for 53% (LOD score of 15.43) and 46% (LOD score of 12.26) of the phenotypic variation was identified at the same position on linkage group 5 of "Rouge de Mauves.” Microsatellite marker UDAp-452 co-segregated with the resistance, and two flanking microsatellites, namely BPPCT037 and BPPCT038A, were identified. When dividing the population according to the alleles of UDAp-452, the subgroup with unfavorable allele had a disease incidence of 32.6% whereas the group with favorable allele had a disease incidence of 21%, leading to a reduction of 35.6% in disease incidence. This study is a first step towards the marker-assisted breeding of new apricot varieties with an increased tolerance to X. arboricola pv. pruni. Springer-Verlag, 2012 Bacterial spot nationallicence Prunus armeniaca nationallicence Microsatellite nationallicence Amplified fragment length polymorphism nationallicence Marker-assisted selection nationallicence Quantitative trait loci nationallicence Socquet-Juglard D. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut Duffy B. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut Pothier J. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut Christen D. Conthey Research Centre, Fruit growing and breeding group, Research Station Agroscope Changins-Wädenswil (ACW), 1964, Conthey, Switzerland aut Gessler C. Plant Pathology, IBZ, Swiss Federal Institute of Technology (ETH Zürich), Universitätstrasse 2, 8092, Zürich, Switzerland aut Patocchi A. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 409-421 1614-2942 9:2<409 2013 9 11295 https://doi.org/10.1007/s11295-012-0562-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11295-012-0562-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Socquet-Juglard D. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut NATIONALLICENCE 700 1- Duffy B. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut NATIONALLICENCE 700 1- Pothier J. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut NATIONALLICENCE 700 1- Christen D. Conthey Research Centre, Fruit growing and breeding group, Research Station Agroscope Changins-Wädenswil (ACW), 1964, Conthey, Switzerland aut NATIONALLICENCE 700 1- Gessler C. Plant Pathology, IBZ, Swiss Federal Institute of Technology (ETH Zürich), Universitätstrasse 2, 8092, Zürich, Switzerland aut NATIONALLICENCE 700 1- Patocchi A. Phytopathology, Research Station Agroscope Changins-Wädenswil (ACW), Schloss 1, 8820, Wädenswil, Switzerland aut NATIONALLICENCE 773 0- Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 409-421 1614-2942 9:2<409 2013 9 11295 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer