. Fig. 68.—Swede, lower half covered with mycelium of Rhizoctonia violacca. packed, more or less parallel, septate hyphae, which spreads out above into a subglobose head of compactly interwoven tissue; and at the lower or basal end, again expanding into a large mass of compactly interwoven hyphae, buried in the tissue of the host. It is the mycelium of the micro-sclerotia that alone enters the living tissues and kills the host; the superficial felt of mycelium does not send mycelium into the tissues, and is so loosely attached that it can usually be rubbed off with the fingers. The second type
. Fig. 68.—Swede, lower half covered with mycelium of Rhizoctonia violacca. packed, more or less parallel, septate hyphae, which spreads out above into a subglobose head of compactly interwoven tissue; and at the lower or basal end, again expanding into a large mass of compactly interwoven hyphae, buried in the tissue of the host. It is the mycelium of the micro-sclerotia that alone enters the living tissues and kills the host; the superficial felt of mycelium does not send mycelium into the tissues, and is so loosely attached that it can usually be rubbed off with the fingers. The second type or macro-
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910
