Fusarium Species and their Association with Soybean Seed under Humid Tropical Conditions in Puerto Rico
Título en español
| dc.creator | ||
| dc.date | 1985-01-01 | |
| dc.date.accessioned | 2022-11-04T15:30:52Z | |
| dc.date.available | 2022-11-04T15:30:52Z | |
| dc.identifier | https://revistas.upr.edu/index.php/jaupr/article/view/7323 | |
| dc.identifier | 10.46429/jaupr.v69i1.7323 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5123420 | |
| dc.description | Over 90% of all Fusarium isolates from 'Davis' soybeans in Corozal and lsabela, Puerto Rico, were identified as F. semitectum; 3 and 2% were identified as F. oxysporum and F. solani, respectively; and less than 1% each were identified as F. rigidusculum and F. episphaeria var. dimerum. F. semitectum comprised 32.6 and 24.8% of all fungal isolates from seed in Corozal and lsabela, respectively. F. semitectum infected soybean seed germinated 9.4% and 31.1% in seedlots from Corozal and lsabela, respectively. Seed infections of improved Pelican soybeans by F. semitectum were first detected during full green bean stage. Frequency of infection increased rapidly at and after yellow pod stage. In laboratory studies, after pods were incubated 5 days at 95% RH and 27°C, F. semitectum inoculated, wounded and inoculated, and nontreated detached full green pods showed 65, 100, and 9% seed viability losses, respectively. Lima bean pod borer (Etiella zinckenella) injury to soybean pods increased incidence of F. semitectum in intact seed and reduced seed germination and incidence of Phomopsis sp., compared to that found in noninjured pods. Naturally aborted soybean pods had a high incidence of F. semitectum (85%) and low incidence (less than 10%) of Collectotrichum dematium, Phomopsis sp., Botryodiploidia theobromae, and Alternaria tenuissima. | en-US |
| dc.description | Más del 90% de las aislaciones de Fusarium en semillas de soya 'Davis' cosechadas en Corozal e lsabela, Puerto Rico, se identificaron como F. semitectum; 3 y 2% de las mismas aislaciones se identificaron como F. oxysporum y F. solani, respectivamente; y menos de 1% como F. rigidusculum y F. episphaeria var. dimerum. La incidencia de F. semitectum lleg6 a 32.6% de todas las aislaciones de hongos en Corozal y 24.8% en Isabela. Se encontraron las primeras infecciones internas en semillas de soya 'Improved Pelican' cuando las vainas estaban hechas pero todavía verdes. La incidencia de infección en la semilla aumentó notablemente en vainas amarillas y en etapas más avanzadas. Vainas hechas pero verdes se cosecharon e inocularon con F. semitectum. Se notaron pérdidas en la viabilidad de la semilla cuando las vainas inoculadas se incubaron par 5 días a 95% HR y 27° C. Las semillas de las vainas inoculadas perdieron 65% de su viabilidad mientras que las de las vainas inoculadas sobre heridas artificiales perdieron la viabilidad totalmente. El barrenador de la vaina de la haba (Etiella zinckenella) aumentó la infección de semillas por F. semitectum y disminuyó la germinación y la infección por Phomopsis sp. En vainas abortadas se observó una elevada incidencia (85%) de F. semitectum. Collectotrichum dematium, Phomopsis sp., Botryodiploidia theobromae y Alternaria tenuissima tambien colonizaron las vainas abortadas, pero a incidencias menores de 8% cada uno. | 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/7323/5949 | |
| dc.rights | Derechos de autor 2017 Journal of Agriculture of the University of Puerto Rico. | es-ES |
| dc.source | The Journal of Agriculture of the University of Puerto Rico; Vol. 69 No. 1 (1985): Vol. 69, No. 1, January 1985; 25-33 | en-US |
| dc.source | Journal of Agriculture of the University of Puerto Rico; Vol. 69 Núm. 1 (1985): Vol. 69, No. 1, January 1985; 25-33 | es-ES |
| dc.source | 2308-1759 | |
| dc.source | 0041-994X | |
| dc.source | 10.46429/jaupr.v69i1 | |
| dc.subject | Fusarium | en-US |
| dc.subject | Soybean seed--Diseases and pests--Puerto Rico | en-US |
| dc.subject | Fusarium diseases of plants | en-US |
| dc.subject | Soybean--Diseases and pests--Puerto Rico | en-US |
| dc.title | Fusarium Species and their Association with Soybean Seed under Humid Tropical Conditions in Puerto Rico | en-US |
| dc.title | Título en español | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |