Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars
Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. was determined in the field on 14 bean cultivars after artificially induced infection. Isolate IG1-77 of the fungus was used to cause the infection, and evaluation was made using the CIAT disease severity scale of 1-5. The lat...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
International Society for Horticultural Science
1988
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/88316 |
| _version_ | 1855536590090141696 |
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| author | Buruchara, Robin Arani Gathuru, E.M. Mukunya, D.M. |
| author_browse | Buruchara, Robin Arani Gathuru, E.M. Mukunya, D.M. |
| author_facet | Buruchara, Robin Arani Gathuru, E.M. Mukunya, D.M. |
| author_sort | Buruchara, Robin Arani |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. was determined in the field on 14 bean cultivars after artificially induced infection. Isolate IG1-77 of the fungus was used to cause the infection, and evaluation was made using the CIAT disease severity scale of 1-5. The latter was subjected to logit transformation for analysis. The apparent rate of disease increase (r) was estimated for 8 cultivars selected for their varying susceptibility. Evaluation of disease incidence and severity showed four general patterns, ranging from immune reactions, low disease incidence and severity, high disease incidence but low severity, and high disease incidence and severity. The incubation period varied among cultivars. Computation of apparent rate of disease increase (r) showed that disease progress in cultivars `BAT 67 - (20) P` and `BAT 966 - IP - (20) P` was about one third of that in `G2858` and `Alabama No. 1`. This is interpreted by van der Plank`s model to mean that the former cultivars exhibited partial resistance against the IG1-77 isolate expressed as the r-reducing resistance. (AS) |
| format | Journal Article |
| id | CGSpace88316 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1988 |
| publishDateRange | 1988 |
| publishDateSort | 1988 |
| publisher | International Society for Horticultural Science |
| publisherStr | International Society for Horticultural Science |
| record_format | dspace |
| spelling | CGSpace883162025-03-11T12:14:31Z Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars Buruchara, Robin Arani Gathuru, E.M. Mukunya, D.M. phaseolus vulgaris cultivars resistance isariopsis griseola pathogenicity symptomatology diseases and pathogens mycoses pests variedades resistencia patogenicidad sintomatologia Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. was determined in the field on 14 bean cultivars after artificially induced infection. Isolate IG1-77 of the fungus was used to cause the infection, and evaluation was made using the CIAT disease severity scale of 1-5. The latter was subjected to logit transformation for analysis. The apparent rate of disease increase (r) was estimated for 8 cultivars selected for their varying susceptibility. Evaluation of disease incidence and severity showed four general patterns, ranging from immune reactions, low disease incidence and severity, high disease incidence but low severity, and high disease incidence and severity. The incubation period varied among cultivars. Computation of apparent rate of disease increase (r) showed that disease progress in cultivars `BAT 67 - (20) P` and `BAT 966 - IP - (20) P` was about one third of that in `G2858` and `Alabama No. 1`. This is interpreted by van der Plank`s model to mean that the former cultivars exhibited partial resistance against the IG1-77 isolate expressed as the r-reducing resistance. (AS) 1988-01 2017-10-12T08:02:15Z 2017-10-12T08:02:15Z Journal Article https://hdl.handle.net/10568/88316 en Limited Access International Society for Horticultural Science BURUCHARA, R.A.; GATHURU, E.M.; MUKUNYA, D.M. 1988. Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars. Acta Horticulturae. 218:321-328. |
| spellingShingle | phaseolus vulgaris cultivars resistance isariopsis griseola pathogenicity symptomatology diseases and pathogens mycoses pests variedades resistencia patogenicidad sintomatologia Buruchara, Robin Arani Gathuru, E.M. Mukunya, D.M. Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title_full | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title_fullStr | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title_full_unstemmed | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title_short | Disease progress of angular leaf spot caused by Isariopsis griseola Sacc. and its implications on resistance of some bean (Phaseolus vulgaris L.) cultivars |
| title_sort | disease progress of angular leaf spot caused by isariopsis griseola sacc and its implications on resistance of some bean phaseolus vulgaris l cultivars |
| topic | phaseolus vulgaris cultivars resistance isariopsis griseola pathogenicity symptomatology diseases and pathogens mycoses pests variedades resistencia patogenicidad sintomatologia |
| url | https://hdl.handle.net/10568/88316 |
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