RosaceaeEuropePrunusFragariaPotentillaMalusSorbusSpiraeaGeumSelf-Incompatibility in Flowering PlantsPyrusEurope, EasternErwinia amylovoraPlant Components, AerialRosaGenome, PlantRosalesPollenPhylogenyFruitPolyploidyFlowersRibonucleasesExpressed Sequence TagsGeneticsTreesChromosomes, PlantGenes, PlantPollinationTriterpenesGenetic Markers