Abstract
EYESPOT of wheat caused by Cercosporella herpotrichoides is widespread in East Anglia, where it causes considerable loss in yield1. Typical symptoms of the disease are oval brown-bordered lesions on the straws near soil level. Similar, but less regular, lesions caused by another fungus have been recognized at Rothamsted as a different disease since 1935. This was described in Holland and figured by Oort2, who called it sharp eyespot but did not identify the causal organism. Sprague3,4 found a Rhizoctonia causing similar symptoms on wheat in Oregon. Blair5, working with Rhizoctonia Solani, found that some Canadian strains when inoculated into wheat caused a stem girdling injury the photographs of which resemble those of sharp eyespot. Neither worker identified the lesions caused by Rhizoctonia as the sharp eyespot described by Oort.
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References
Glynne, Mary D., Ann. Appl. Biol., 29, 254 (1942).
Oort, A. J. P., Tidsch. over Plantenziekten., 42, 179 (1936).
Sprague, R., Phytopath., 24, 946 (1934).
Sprague, R., Phytapath., 27, 798 (1937).
Blair, I. D., Canad. J. Res., C, 20, 174 (1942).
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GLYNNE, M., RITCHIE, W. Sharp Eyespot of Wheat caused by Corticium (Rhizoctonia) Solani. Nature 152, 161 (1943). https://doi.org/10.1038/152161a0
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DOI: https://doi.org/10.1038/152161a0
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