Characterization of Rhizoctonia spp. isolates collected from Phaseolus vulgaris in Puerto Rico
Caracterización de aislados de Rhizoctonia spp. recolectados de Phaseolus vulgaris en Puerto Rico
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| dc.date | 2000-04-01 | |
| dc.date.accessioned | 2022-11-04T15:29:12Z | |
| dc.date.available | 2022-11-04T15:29:12Z | |
| dc.identifier | https://revistas.upr.edu/index.php/jaupr/article/view/3903 | |
| dc.identifier | 10.46429/jaupr.v84i1-2.3903 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5122889 | |
| dc.description | Thirteen isolates collected from soil samples, infected seeds, hypocotyls, leaves and pods of common beans (Phaseolus vulgaris) grown in the northwestern, southern and western areas of Puerto Rico were identified as Rhizoctonia solani (Rs), and one as binucleate Rhizoctonia sp. (Rb). All isolates were characterized by the nuclear condition of the hyphae cell and the anastomosis technique. Seven Rs isolates (54%) were classified into anastomosis group AG 4, and six (46%) were assigned to AG 1. The microsclerotic Rb isolate did not anastomose with any of the AG testers. The AG 4 isolates produced only microsclerotia. Five AG 1 isolates (36%) were macrosclerotic, and one was microsclerotia The Rs isolates and the Rb isolate differed in mycelia radial growth after 48 h of incubation at 28° C on acidified potato dextrose agar. The sexual stage of the isolates was not observed throughout this research. Storing dried beet (Beta vulgaris L.) seeds colonized by R. solani for at least a year at 4° C in the dark seems to be a reliable method to ensure viability and virulence of the pathogen. | en-US |
| dc.description | Trece aislados de Rhizoctonia spp., recolectados en el noroeste, sur y oeste de Puerto Rico de muestras de suelo, semillas, hipocotilos, vainas y hojas infectadas de habichuela (Phaseolus vulgaris L.), se identificaron como R. solani (Rs) y uno como Rhizoctonia sp. binucleada (Rb). Todos los aislados se caracterizaron por la condición nuclear de las hifas y por la técnica de anastomosis. Siete aislados (54%) se clasificaron en el grupo de anastomosis GA 4, y seis (46%) en el GA 1. No hubo anastomosis con el aislado microesclerótico Rb al éste parearse con los repesentativos GA. Los aislados GA 4 produjeron solamente microesclerocios. Cinco aislados GA 1 (36%) fueron macroescleróticos y uno fue microesclerótico. El crecimiento radial micelial de los aislados Rs fue diferente al del aislado Rb luego de ser incubados por 48 h a 28° C en agar de papa dextrosada acidificada. Durante esta investigación no se observó el estado sexual de los aislados. El almacenamiento, por un año en la oscuridad a 4˚C, de la semilla seca de remolacha (Beta vulgaris L.) colonizada por R. solani parece ser un método confiable para mantener la viabilidad y virulencia del patógeno. | es-ES |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | University of Puerto Rico Mayagüez Campus Agricultural Experiment Station | en-US |
| dc.relation | https://revistas.upr.edu/index.php/jaupr/article/view/3903/3368 | |
| dc.rights | Derechos de autor 2016 Journal of Agriculture of the University of Puerto Rico. | es-ES |
| dc.source | The Journal of Agriculture of the University of Puerto Rico; Vol. 84 No. 1-2 (2000): Vol. 84, No. 1-2, January - April 2000; 79-86 | en-US |
| dc.source | Journal of Agriculture of the University of Puerto Rico; Vol. 84 Núm. 1-2 (2000): Vol. 84, No. 1-2, January - April 2000; 79-86 | es-ES |
| dc.source | 2308-1759 | |
| dc.source | 0041-994X | |
| dc.source | 10.46429/jaupr.v84i1-2 | |
| dc.subject | Rhizoctonia solani | en-US |
| dc.subject | Tranatephorus cucumeris | en-US |
| dc.subject | Phaseolus vulgaris | en-US |
| dc.subject | Anastomosis | en-US |
| dc.subject | Binucleate | en-US |
| dc.subject | Kidney bean--Diseases and pests--Biological control | en-US |
| dc.subject | Fungi phytopathogenesis--Biological control | en-US |
| dc.subject | Rhizoctonia solani--Biological control | en-US |
| dc.subject | Phaseolus vulgaris | en-US |
| dc.title | Characterization of Rhizoctonia spp. isolates collected from Phaseolus vulgaris in Puerto Rico | en-US |
| dc.title | Caracterización de aislados de Rhizoctonia spp. recolectados de Phaseolus vulgaris en Puerto Rico | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |