Ascochyta lentis renamed Ascochyta fabae f. sp. lentis

Authors: Gossen, Bruce D.; Sheard, J. W.; Beauchamp, Chantal Jeanne; Sheard, J. W.; Morrall, R. A. A.
Abstract: Sixty-eight isolates of Ascochyta lentis, the causal agent of ascochyta blight of lentil (Lens culinaris) were obtained from locations around the world. The variability of these cultures for six cultural and seven morphological characters was compared with that of 13 isolates of A. fabae, the causal agent of ascochyta blight of faba bean (Vicia faba). In greenhouse and field trials, lentil and faba bean were inoculated with cultures isolated from both species to assess the degree of host specificity. Multivariate analysis of the cultural and morphological characters could not separate the two species. However, differences in host specificity were clear cut, with isolates infecting only the host from which they were originally isolated. We advocate that A. lentis be synonymized with A. fabae and propose two special forms: A. fabae f. sp. fabae for isolates pathogenic on faba bean and A. fabae f. sp. lentis for isolates pathogenic on lentil.
Document Type: Article de recherche
Issue Date: 29 December 2009
Open Access Date: Restricted access
Document version: VoR
This document was published in: Canadian journal of plant pathology, Vol. 8 (2), 154-160 (2009)
Canadian Phytopathological Society
Alternative version: 10.1080/07060668609501820
Collection:Articles publiés dans des revues avec comité de lecture

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