RosaceaePrunusFragariaPotentillaMalusSorbusSpiraeaGeumSelf-Incompatibility in Flowering PlantsPyrusErwinia amylovoraPlant Components, AerialRosaGenome, PlantRosalesPollenFruitPhylogenyPolyploidyFlowersRibonucleasesGenes, PlantExpressed Sequence TagsPlant LeavesChromosomes, PlantGeneticsTriterpenesPollinationTreesSyntenyGenomics