Abstract
SINCE Peronospora Schleideni, Unger, the onion mildew fungus, is known to produce its sexual organs in the leaves of the host-plant, the assumption has been made that the parasite is dependent on its oospores for perpetuation from year to year. It has now been proved, however, that the mycelium is capable of a perennial existence in onion bulbs, and that the shoots produced if such bulbs are planted are infected ab initio.
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MURPHY, P. The Presence of Perennial Mycelium in Peronospora Schleideni, Unger. Nature 108, 304 (1921). https://doi.org/10.1038/108304a0
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DOI: https://doi.org/10.1038/108304a0
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