has_participant has participant has participant plant spore plant spore stage PO:0025375 胞子期 (Japanese, exact) rwalls spore stage (broad) 2012-01-05T10:32:33Z PO_GIT:425 etapa esporof&#237tica de la planta (Spanish, exact) plant_structure_development_stage Includes the stage when a megaspore is present before it develops into a megagametophyte or embryo sac and the stage when a microspore is present before it develops into a microgametophyte or pollen. There may be cell division in a spore before it germinates. A gametophyte development stage (PO:0028003) that occurs during the interval between meiosis and the germination of a spore. gametophyte development stage