Mapping of QTL for resistance to the Mediterranean corn borer attack using the intermated B73 × Mo17 (IBM) population of maize
| Autor: | Germán V. Sandoya, Rogelio Santiago, M. C. Romay, Rosa Ana Malvar, Ana Butrón, Bernardo Ordás |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
European corn borer
education.field_of_study biology Positional cloning Population Quantitative Trait Loci Sesamia nonagrioides Chromosome Mapping General Medicine Feeding Behavior Quantitative trait locus Moths biology.organism_classification Zea mays Ostrinia Agronomy Inbred strain Genetics Animals Plant breeding education Agronomy and Crop Science Biotechnology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | The Mediterranean corn borer or pink stem borer (MCB, Sesamia nonagrioides Lefebvre) causes important yield losses as a consequence of stalk tunneling and direct kernel damage. B73 and Mo17 are the source of the most commercial valuable maize inbred lines in temperate zones, while the intermated B73 × Mo17 (IBM) population is an invaluable source for QTL identification. However, no or few experiments have been carried out to detect QTL for corn borer resistance in the B73 × Mo17 population. The objective of this work was to locate QTL for resistance to stem tunneling and kernel damage by MCB in the IBM population. We detected a QTL for kernel damage at bin 8.05, although the effect was small and two QTL for stalk tunneling at bins 1.06 and 9.04 in which the additive effects were 4 cm, approximately. The two QTL detected for MCB resistance were close to other QTL consistently found for European corn borer (ECB, Ostrinia nubilalis Hübner) resistance, indicating mechanisms of resistance common to both pests or gene clusters controlling resistance to different plagues. The precise mapping achieved with the IBM population will facilitate the QTL pyramiding and the positional cloning of the detected QTL. This research was supported by the National Plan for Research and Development of Spain (Project Cod. AGL2006-13140). B Ordas and R Santiago acknowledge a contract from the Spanish National Research Council (I3P Program) and G Sandoya acknowledges a fellowship from the Ministry of Education and Science (Spain). MEC CSIC |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|