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单词 oogonia
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oogonia

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oogonia

Oogonia and antheridia are especially susceptible to the reduction of the light period.It also produces both ornamented and relatively smooth-walled oogonia.Vegetative cells, oogonia and antheridia were observed, which allowed taxonomic identification.Oocyte maturation takes place in four stages: oogonia, primary oocytes, developing oocytes, and mature oocytes.The ovary contained oocytes at differential stages of development including oogonia and the previtellogenic stage.As opposed to female oogonia, the male germ cells undergo hundreds of cell divisions during the fertile years.The isolates were homothallic and produced spherical oogonia with smooth walls and paragynous, rarely amphigynous, spherical to ovoid antheridia.The oogonia are attached to a parental hypha by a short truncated stalk with a single septum.Our observations are discussed in terms of changing morphogenetic preferences for antheridia and oogonia within the life-span of a plant.
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