RosaceaePrunusFragariaPotentillaMalusSorbusSpiraeaGeumSelf-Incompatibility in Flowering PlantsPyrusErwinia amylovoraPlant Components, AerialRosaGenome, PlantRosalesPollenFruitPolyploidyFlowersRibonucleasesPhylogenyGeneticsExpressed Sequence TagsChromosomes, PlantGenes, PlantPollinationTriterpenesTrees