Verification of predictions from estimators of favorable alleles to improve yield of sweet corn hybrids
Sweet corn (Zea mays L.) breeding has focused on quality, with yield and agronomic performance as secondary traits. Elite American and European field corn inbreds were selected to improve the agronomic value of sweet corn for European conditions. Our objective was to compare realized results and pre...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2004 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/32950 |
| Acceso en línea: | http://hdl.handle.net/10261/32950 |
| Access Level: | acceso abierto |
| Palabra clave: | Zea mays Sweet corn Yield Maize |
| Sumario: | Sweet corn (Zea mays L.) breeding has focused on quality, with yield and agronomic performance as secondary traits. Elite American and European field corn inbreds were selected to improve the agronomic value of sweet corn for European conditions. Our objective was to compare realized results and predictions of methods to identify potential donors for improving agronomic performance of sweet corn hybrids. Yield and three agronomic traits were recorded. Estimates of favorable dominant alleles present in the donor but not in the hybrid (μG') and probability of net gain of favorable alleles given complete dominance (PNGg) were compared. The field corn inbreds A632 and EP42 were identified as the best potential donors for improving yield and several yield components of sweet corn hybrids in a previous study. The estimator μG' correctly predicted the best donor of favorable alleles for improving yield and agronomic performance of sweet corn hybrids. Realized response, however, did not coincide with the predictions, particularly for the ranking of donors. The prediction of the best recipient reasonably fitted the realized results. The field corn inbred A632 was the best donor. The use of EP42 would reduce row number, and the use of W64A would reduce yield and ear length. |
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