Por medio de metil acido esteres (FAMES), fueron analizados 382 aislamientos pertenecientes a cinco variedades de semillas de Allium cepa L. (S1, S2,S3,S4,S5). Se determino que el 20% afecta a cultivos de interés económico, el 36% pertenecen a patógenos que afectan humanos, el 4% afectan a animales y el 40% son del ambiente. A los aislamientos se les identifico por medio de perfiles de ácidos grasos usando un cromatógrafo HP 5890 serie II y una columna capilar agilent ultra 2, software MIDI , Newark , Del. Se encontró principalmente los géneros Erwinia, Enterobacter, Pantoea y Pseudomonas las cuales afectan cultivos de interés económico (Allium cepa L. Carica papaya, Zingiber ofíciale, Eucalyptus spp, Cucumis melón, Ananas comosus, Sorghum). De las variedades analizadas, S2 reportó mayor diversidad de Pantoea agglomerans seguida por S3 que además presenta mayor concentración de Enterobacter cloacae; en la variedad S1 ambos patógenos se presentaron en proporción semejante, a diferencia de S5 que presentó Pantoea ananas, Pantoea ananatis, Enterobacter cloacae y S4 solo presento Pantoea agglomerans. / --- By means of acid methyl esters (FAMES), 382 isolates were analyzed from five varieties of seed Allium cepa L. (S1, S2, S3, S4, S5). It was determined that 20% affect crops of economic interest, 36% belong to pathogens that affect humans, 4% affect animals and 40% are from the environment. The isolates were identified by means of fatty acid profile chromatography using an HP 5890 series II, a capillary column Agilent Ultra 2 and MIDI software, Newark, Del. Findings included mainly the genera Erwinia, Enterobacter, Pantoea and Pseudomonas; all of them are described affecting crops of interest. (Allium cepa L. Carica papaya, Zingiber ofíciale, Eucalyptus spp, Cucumis melón, Ananas comosus, Sorghum). Of the varieties tested, S2 reported the greatest diversity of Pantoea agglomerans S3 followed by the largest concentration of Enterobacter cloacae; In the variety S1, both pathogens were presented in similar proportion, unlike S5 which submitted Pantoea ananas, Pantoea ananatis, and Enterobacter cloacae. S4 only presented Pantoea agglomerans.

Por medio de metil acido esteres (FAMES), fueron analizados 382 aislamientos pertenecientes a cinco variedades de semillas de Allium cepa L. (S1, S2,S3,S4,S5). Se determino que el 20% afecta a cultivos de interés económico, el 36% pertenecen a patógenos que afectan humanos, el 4% afectan a animales y el 40% son del ambiente. A los aislamientos se les identifico por medio de perfiles de ácidos grasos usando un cromatógrafo HP 5890 serie II y una columna capilar agilent ultra 2, software MIDI , Newark , Del. Se encontró principalmente los géneros Erwinia, Enterobacter, Pantoea y Pseudomonas las cuales afectan cultivos de interés económico (Allium cepa L. Carica papaya, Zingiber ofíciale, Eucalyptus spp, Cucumis melón, Ananas comosus, Sorghum). De las variedades analizadas, S2 reportó mayor diversidad de Pantoea agglomerans seguida por S3 que además presenta mayor concentración de Enterobacter cloacae; en la variedad S1 ambos patógenos se presentaron en proporción semejante, a diferencia de S5 que presentó Pantoea ananas, Pantoea ananatis, Enterobacter cloacae y S4 solo presento Pantoea agglomerans. / By means of acid methyl esters (FAMES), 382 isolates were analyzed from five varieties of seed Allium cepa L. (S1, S2, S3, S4, S5). It was determined that 20% affect crops of economic interest, 36% belong to pathogens that affect humans, 4% affect animals and 40% are from the environment. The isolates were identified by means of fatty acid profile chromatography using an HP 5890 series II, a capillary column Agilent Ultra 2 and MIDI software, Newark, Del. Findings included mainly the genera Erwinia, Enterobacter, Pantoea and Pseudomonas; all of them are described affecting crops of interest. (Allium cepa L. Carica papaya, Zingiber ofíciale, Eucalyptus spp, Cucumis melón, Ananas comosus, Sorghum). Of the varieties tested, S2 reported the greatest diversity of Pantoea agglomerans S3 followed by the largest concentration of Enterobacter cloacae; In the variety S1, both pathogens were presented in similar proportion, unlike S5 which submitted Pantoea ananas, Pantoea ananatis, and Enterobacter cloacae. S4 only presented Pantoea agglomerans.