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单词 antheridia
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antheridia

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Examples of 'antheridia' in a sentence
antheridia

Oogonia and antheridia are especially susceptible to the reduction of the light period.In all treatments, cordiform gametophytes presenting antheridia were observed at 120 days.Vegetative cells, oogonia and antheridia were observed, which allowed taxonomic identification.Mature gametophyte possessed functional antheridia and archegonia.The isolates were homothallic and produced spherical oogonia with smooth walls and paragynous, rarely amphigynous, spherical to ovoid antheridia.The antheridia appear 46-234 days after the sowing, have three cells surrounding the androgenic cell.Our observations are discussed in terms of changing morphogenetic preferences for antheridia and oogonia within the life-span of a plant.Both archegonia and antheridia were found on each gametophyte, showing the evidence of being homosporous fern.Oogonia and antheridia were also observed inside the epidermal cells, and oospores inside the parenchymal tissue close to xylem vessels.
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