Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja
A total of 18 bean var. with different degrees of rust resistance in the field were subjected to 4 treatments, to obtain high severity of Uromyces phaseoli under low RH. Treatments were (1) greenhouse inoculation, with optimum temp. and RH for disease development, (2) field inoculation in infection...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | Español |
| Published: |
1986
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/88578 |
| _version_ | 1855534616309399552 |
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| author | Castaño Zapata, Jairo Jara, Carlos E. |
| author_browse | Castaño Zapata, Jairo Jara, Carlos E. |
| author_facet | Castaño Zapata, Jairo Jara, Carlos E. |
| author_sort | Castaño Zapata, Jairo |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A total of 18 bean var. with different degrees of rust resistance in the field were subjected to 4 treatments, to obtain high severity of Uromyces phaseoli under low RH. Treatments were (1) greenhouse inoculation, with optimum temp. and RH for disease development, (2) field inoculation in infection beds, with daily irrigation on the leaves and plastic mulch to create a humid chamber, (3) same as (2) but with no humid chamber, and (4) field inoculation in infection beds, without both irrigation and humid chamber. Av. day/night temp. (degrees C) and RH (percentage) for treatments (1), (2), (3), and (4) were 24.7/21.5 and 78.7/91.8, 28.0/21.0 and 74.8/98.6, 25.8 and 85, and 28.0/25.8 and 53.1/73.7, resp. In treatment (1), the fungus incubation and dormancy period in the var. evaluated ranged between 6 and 10 days, and between 7 and 12 days, resp. Ranges in treatments (2) and (3) were similar. In treatment (4), the lack of daily irrigation resulted in an extension of the incubation and dormancy period, significantly reducing disease, due to the low uredospore germination resulting from unfavorable environmental conditions. Disease severity was greater in the greenhouse than in the field. However, in field conditions, irrigation provided the necessary RH for U. phaseoli to develop. In low RH areas, high rust severity can be obtained in bean var. or lines evaluated for resistance to the pathogen. (CIAT) |
| format | Journal Article |
| id | CGSpace88578 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 1986 |
| publishDateRange | 1986 |
| publishDateSort | 1986 |
| record_format | dspace |
| spelling | CGSpace885782023-06-12T19:54:18Z Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja Castaño Zapata, Jairo Jara, Carlos E. phaseolus vulgaris uromyces phaseoli pathogenicity temperature cultivars climatic requirements cultivation diseases and pathogens mycoses pests patogenicidad temperatura variedades A total of 18 bean var. with different degrees of rust resistance in the field were subjected to 4 treatments, to obtain high severity of Uromyces phaseoli under low RH. Treatments were (1) greenhouse inoculation, with optimum temp. and RH for disease development, (2) field inoculation in infection beds, with daily irrigation on the leaves and plastic mulch to create a humid chamber, (3) same as (2) but with no humid chamber, and (4) field inoculation in infection beds, without both irrigation and humid chamber. Av. day/night temp. (degrees C) and RH (percentage) for treatments (1), (2), (3), and (4) were 24.7/21.5 and 78.7/91.8, 28.0/21.0 and 74.8/98.6, 25.8 and 85, and 28.0/25.8 and 53.1/73.7, resp. In treatment (1), the fungus incubation and dormancy period in the var. evaluated ranged between 6 and 10 days, and between 7 and 12 days, resp. Ranges in treatments (2) and (3) were similar. In treatment (4), the lack of daily irrigation resulted in an extension of the incubation and dormancy period, significantly reducing disease, due to the low uredospore germination resulting from unfavorable environmental conditions. Disease severity was greater in the greenhouse than in the field. However, in field conditions, irrigation provided the necessary RH for U. phaseoli to develop. In low RH areas, high rust severity can be obtained in bean var. or lines evaluated for resistance to the pathogen. (CIAT) 1986 2017-10-12T08:03:27Z 2017-10-12T08:03:27Z Journal Article https://hdl.handle.net/10568/88578 es Limited Access CASTANO Z., J.; JARA, C.E. 1986. Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja. Ceiba. 27(2):311-320. |
| spellingShingle | phaseolus vulgaris uromyces phaseoli pathogenicity temperature cultivars climatic requirements cultivation diseases and pathogens mycoses pests patogenicidad temperatura variedades Castaño Zapata, Jairo Jara, Carlos E. Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title | Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title_full | Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title_fullStr | Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title_full_unstemmed | Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title_short | Metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| title_sort | metodo para obtener alta severidad de la roya del frijol en areas con humedad relativa baja |
| topic | phaseolus vulgaris uromyces phaseoli pathogenicity temperature cultivars climatic requirements cultivation diseases and pathogens mycoses pests patogenicidad temperatura variedades |
| url | https://hdl.handle.net/10568/88578 |
| work_keys_str_mv | AT castanozapatajairo metodoparaobteneraltaseveridaddelaroyadelfrijolenareasconhumedadrelativabaja AT jaracarlose metodoparaobteneraltaseveridaddelaroyadelfrijolenareasconhumedadrelativabaja |