MeristemOvuleGerm Cells, PlantGametogenesis, PlantPiperaceaeGametogenesisPollen TubeArabidopsisPollenArabidopsis ProteinsGene Expression Regulation, PlantSeedsGenes, PlantEndospermHyacinthusFlowersAngiospermsFernsPlant InfertilityFertilizationRNA, PlantPlants, Genetically ModifiedReproductionMutationPlant ShootsPlant ProteinsGene Expression Regulation, DevelopmentalGerminationEmbryo, MammalianPhenotypePteridaceaeDNA, PlantZea maysEmbryo, NonmammalianMolecular Sequence DataPolypodiaceaeMutagenesis, InsertionalChick EmbryoGerm CellsBryopsidaCrosses, GeneticMADS Domain ProteinsMarsileaceaeAmino Acid SequenceInflorescencePlant RootsIndoleacetic AcidsBryophytaTranscription FactorsSporesBase SequenceEmbryo ImplantationCytokininsPterisGene Expression ProfilingHomeodomain ProteinsPlant DevelopmentPlant LeavesGenetic Complementation TestModels, BiologicalBiological EvolutionBlastocystHaploidyCell DifferentiationMitosisEmbryonic DevelopmentPlant Components, AerialPlant Physiological PhenomenaPlantsIn Situ HybridizationMicroscopy, Electron, ScanningPlant StemsOryza sativaReverse Transcriptase Polymerase Chain ReactionPhylogenyPteridiumSequence Homology, Amino AcidPlant Growth RegulatorsPromoter Regions, GeneticDryopterisRNA, MessengerPlant Root CapPregnancyPhaeophytaEmbryo LossEmbryonic and Fetal DevelopmentDiploidySeedlingGlucuronidaseAllelesCloning, MolecularCotyledonFertilization in VitroTime FactorsSelf-FertilizationPlant Vascular BundleSignal TransductionAnthocerotophytaBody PatterningKelp