Sentence Examples


  • Mycelium present; antheridia but no antherozoids; oogonia with one or more oospheres: Peronosporaceae, Saprolegniaceae.
  • Peronosporaceae are a group of endophytic parasites - about ioo species - of great importance as comprising the agents of "damping off" disease (Pythium), vine-mildew (Plasmopara), potato disease (Phytophthora), onion-mildew (Peronospora).
  • The Peronosporaceae reproduce themselves sexually by means of antheridia and oogonia as described in Pythium.
  • The sexual reproduction shows all transitions between forms which are normally sexual, like the Peronosporaceae, to forms in which no antheridium is developed and the oospheres develop parthenogenetically.
  • The oogonia, unlike the Peronosporaceae, contain more than one oosphere.
 

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  • peronosporaceae