Author： Siddiqui I.A.
Publisher： Brill
ISSN： 1875-2926
Source： Nematologica, Vol.17, Iss.2, 1971-01, pp. : 237-242
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Abstract
Large numbers of Meloidogyne naasi larvae penetrated root tips of 'Wintok' oats within the first 24 hours and first sign of incipient giant cell formation was visible 4 days after inoculation. Three independent responses were observed: a) Necrosis of inner cortical and endodermal cells in contact with the nematode lip region and failure of larvae to enter the stele; b) Necrosis of cells around the incipient giant cells, finally resulting in degeneration of giant cells and larvae; c) Uninterrupted giant cell development, which is indistinguishable from that in a susceptible host. These responses indicate that 'Wintok' oats are only partially resistant to M. naasi.
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