Show simple item record Lamari, Lakhdar. en_US 2009-12-01T20:17:45Z 2009-12-01T20:17:45Z 1982-08-01-01:09T00:00:00Z en_US
dc.identifier ocm72785428 en_US
dc.description.abstract A severe seedling blight and root rot of faba bean (Vicia faba L.) has been observed since 1978 in experimental plots at the University of Manitoba (U of M) and in some commercial faba bean fields in Eastern Manitoba. Aphanomyces euteiches Drechs. was found to be the main agent of the disease at the U of M Campus farm, where faba bean root rot was consistently severe. Rhizoctonia solani Kuehn. was isolated from plants of faba bean and other crops infected at different locations. The pathogenic isolates of R. solani caused damping-off of faba bean plants except for one isolate recovered in Eastern Manitoba. The latter caused a soft rot of the stem and roots and was more aggressive than any of the other isolates. A Fusarium tentatively identified as F. avenaceum (Fr.) Sacc. was recovered from mature faba bean plants in Eastern Manitoba and found to be pathogenic to faba bean and peas in the greenhouse. In addition to V. faba, 12 leguminous species were infected by A. euteiches. The following species were infected and do not appear to have been reported as hosts of this fungus: Lathyrus ochroleucus Hook., L. sativus L., Lens culinaris Medic., Vicia calcarata Desf., V. cracca L., V. disperma D.C., V. narbonensis L. and V. tetrasperma Schreber. The faba bean type isolate (AE1) differed in pathogencity from Wisconsin pea isolate (P14). The latter was avirulent on faba bean. Three pathotypes were identified among the Manitoba isolates of A. euteiches. Pathotypes AE1, AE2 and AE3 were pathogenic to peas; pathotypes AE1 and AE2 were distinguished by a pea cultivar and AE3 was not virulent on faba bean and lentils... en_US
dc.format.extent x, 112 leaves : en_US
dc.format.extent 7400530 bytes
dc.format.mimetype application/pdf
dc.language en en_US
dc.language.iso en_US
dc.rights The reproduction of this thesis has been made available by authority of the copyright owner solely for the purpose of private study and research, and may only be reproduced and copied as permitted by copyright laws or with express written authorization from the copyright owner. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title Etiology of seedling blight and root rot of faba bean (Vicia faba) in Manitoba en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US Plant Science en_US Master of Science (M.Sc.) en_US

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