Factors affecting seed quality and yield potential of onion (Allium cepa L.)
The physiological quality of the seed guarantees optimal crop yields. At the Graduate School of Agronomy of the Universidad Centroccidental Lisandro Alvarado (UCLA), Lara state, Venezuela, factors that influence the quality of Allium cepa L seeds were studied. In the study, the physiological quality, microbiota with pathogenic potential and secondary metabolites in four commercial onion seed materials (Allium cepa L.): Texas 438 identified as TX1 and TX2, and Yellow Granex YG1 and YG2. For the vigor tests, the germination count, emergence percentage (PE), emergence speed (VE), emergence speed index (IVE) was performed, as well as a viability test with tetrazolium (Tz). The microbiota was determined by incubation in culture medium for fungi and bacteria and secondary metabolites were determined by thin layer chromatography. For germination, emergence and pathogen identification evaluations, four replications of 100 seeds each were arranged. The results showed that the germination percentage of the evaluated materials was below international standards (80%), germination was affected by the storage conditions that influenced the viability of the seeds, which was reflected in the phytosanitary state with the presence of Aspergillus sp., A. niger, Rhizopus, Fusarium, Mucor, Penicillum and some bacteria. The secondary metabolites present (phenols and flavonoids) played a fundamental role in the defense against the microbiota present, finding high values of them in the seeds with fewer pathogens.
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Universidad Nacional de Colombia - Sede Palmira
2021
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Pacheco, José Daniel Torres, Duilio Gilberto Queralez, Pastora Josefina Valera Merlo, Rosario Álvarez Orozco, Sorianny García Orellana, Yelitza |
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Pacheco, José Daniel Torres, Duilio Gilberto Queralez, Pastora Josefina Valera Merlo, Rosario Álvarez Orozco, Sorianny García Orellana, Yelitza Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
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Pacheco, José Daniel Torres, Duilio Gilberto Queralez, Pastora Josefina Valera Merlo, Rosario Álvarez Orozco, Sorianny García Orellana, Yelitza |
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Pacheco, José Daniel |
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Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
| title_short |
Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
| title_full |
Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
| title_fullStr |
Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
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Factors affecting seed quality and yield potential of onion (Allium cepa L.) |
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factors affecting seed quality and yield potential of onion (allium cepa l.) |
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The physiological quality of the seed guarantees optimal crop yields. At the Graduate School of Agronomy of the Universidad Centroccidental Lisandro Alvarado (UCLA), Lara state, Venezuela, factors that influence the quality of Allium cepa L seeds were studied. In the study, the physiological quality, microbiota with pathogenic potential and secondary metabolites in four commercial onion seed materials (Allium cepa L.): Texas 438 identified as TX1 and TX2, and Yellow Granex YG1 and YG2. For the vigor tests, the germination count, emergence percentage (PE), emergence speed (VE), emergence speed index (IVE) was performed, as well as a viability test with tetrazolium (Tz). The microbiota was determined by incubation in culture medium for fungi and bacteria and secondary metabolites were determined by thin layer chromatography. For germination, emergence and pathogen identification evaluations, four replications of 100 seeds each were arranged. The results showed that the germination percentage of the evaluated materials was below international standards (80%), germination was affected by the storage conditions that influenced the viability of the seeds, which was reflected in the phytosanitary state with the presence of Aspergillus sp., A. niger, Rhizopus, Fusarium, Mucor, Penicillum and some bacteria. The secondary metabolites present (phenols and flavonoids) played a fundamental role in the defense against the microbiota present, finding high values of them in the seeds with fewer pathogens. |
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Universidad Nacional de Colombia - Sede Palmira |
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2021 |
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https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/86060 |
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oai:www.revistas.unal.edu.co:article-860602021-12-20T20:40:07Z Factors affecting seed quality and yield potential of onion (Allium cepa L.) Factores que afectan la calidad de semillas y el potencial productivo de la cebolla (Allium cepa L.) Pacheco, José Daniel Torres, Duilio Gilberto Queralez, Pastora Josefina Valera Merlo, Rosario Álvarez Orozco, Sorianny García Orellana, Yelitza Germination microbiota viability vigor Allium cepa L. Agronomy plant breeding Germinación microbiota viabilidad vigor Allium cepa L. Agronomia fitomejoramiento The physiological quality of the seed guarantees optimal crop yields. At the Graduate School of Agronomy of the Universidad Centroccidental Lisandro Alvarado (UCLA), Lara state, Venezuela, factors that influence the quality of Allium cepa L seeds were studied. In the study, the physiological quality, microbiota with pathogenic potential and secondary metabolites in four commercial onion seed materials (Allium cepa L.): Texas 438 identified as TX1 and TX2, and Yellow Granex YG1 and YG2. For the vigor tests, the germination count, emergence percentage (PE), emergence speed (VE), emergence speed index (IVE) was performed, as well as a viability test with tetrazolium (Tz). The microbiota was determined by incubation in culture medium for fungi and bacteria and secondary metabolites were determined by thin layer chromatography. For germination, emergence and pathogen identification evaluations, four replications of 100 seeds each were arranged. The results showed that the germination percentage of the evaluated materials was below international standards (80%), germination was affected by the storage conditions that influenced the viability of the seeds, which was reflected in the phytosanitary state with the presence of Aspergillus sp., A. niger, Rhizopus, Fusarium, Mucor, Penicillum and some bacteria. The secondary metabolites present (phenols and flavonoids) played a fundamental role in the defense against the microbiota present, finding high values of them in the seeds with fewer pathogens. La calidad fisiológica de la semilla garantiza óptimos rendimientos de cultivo. En la Escuela de Posgrado de Agronomía de la Universidad Centroccidental Lisandro Alvarado (UCLA), estado Lara, Venezuela, se estudiaron los factores que inciden en la calidad de semillas de Allium cepa L. En el estudio se evaluaron la calidad fisiológica, microbiota con potencial fitopatógeno y metabolitos secundarios en cuatro materiales comerciales de semillas de cebolla (Allium cepa L.): Texas 438 identificados como TX1 y TX2, y Yellow Granex YG1 y YG2. Para las pruebas de vigor se realizó el conteo de germinación, porcentaje de emergencia (PE), celeridad de emergencia (VE), índice de celeridad de emergencia (IVE), además de una prueba de viabilidad con tetrazolio (Tz). La microbiota fue determinada por incubación en medio de cultivo para hongos y bacterias y los metabolitos secundarios fueron determinados por cromatografía de capa fina. Para las evaluaciones de germinación, emergencia e identificación de patógenos se dispusieron cuatro repeticiones de 100 semillas cada una. Los resultados mostraron que el porcentaje de germinación de los materiales evaluados estaba por debajo de los estándares internacionales (80%), la germinación fue afectada por las condiciones de almacenamiento que influyeron en la de viabilidad de las semillas, lo cual se reflejó en el estado fitosanitario con presencia de Aspergillus sp., A. niger, Rhizopus, Fusarium, Mucor, Penicillum y algunas bacterias. Los metabolitos secundarios presentes (fenoles y flavonoides) desempeñaron un papel fundamental en la defensa contra la microbiota presente, encontrando valores altos de los mismos en las semillas con menor cantidad de patógenos. Universidad Nacional de Colombia - Sede Palmira 2021-11-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Experimental Experimental application/pdf text/xml https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/86060 10.15446/acag.v69n4.86060 Acta Agronómica; Vol. 69 No. 4 (2020); 314-320 Acta Agronómica; Vol. 69 Núm. 4 (2020); 314-320 Acta Agronómica; v. 69 n. 4 (2020); 314-320 2323-0118 0120-2812 spa https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/86060/81866 https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/86060/81867 South america Suramérica Derechos de autor 2020 Acta Agronómica https://creativecommons.org/licenses/by-nc-nd/4.0 |