Multi-parent QTL mapping reveals stable QTL conferring resistance to Gibberella ear rot in maize
| Autor: | Ana L. Galiano-Carneiro, David Sewordor Gaikpa, Maria Belen Kistner, Thomas Miedaner, Bettina Kessel, Thomas Presterl |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Fusarium Germplasm Yields Plant Science Horticulture Quantitative trait locus 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Inbred strain Genetics Enfermedades de las Plantas Mycotoxin Maíz Plant Diseases biology Resistance (ecology) Rendimiento fungi Gibberella zeae food and beverages biology.organism_classification Maize Fusarium graminearum 030104 developmental biology Agronomy chemistry Gibberella Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Euphytica 217 (2) : 1-13. (2021) INTA Digital (INTA) Instituto Nacional de Tecnología Agropecuaria instacron:INTA |
| DOI: | 10.1007/s10681-020-02748-x |
| Popis: | Maize production is on risk by Gibberella ear rot (GER) caused by Fusarium graminearum. This is one of the most important ear rot diseases in temperate zones as it leads to yield losses and production of harmful mycotoxins. We investigated, for the first time, the potential use of Brazilian tropical maize to increase resistance levels to GER in temperate European flint germplasm by analyzing six interconnected biparental populations. We assessed GER symptoms in Brazil and in Europe in up to six environments (= location × year combinations) during the growing seasons of 2018 and 2019. We conducted multi-parent QTL and biparental QTL mapping, and identified four QTLs with additive gene action, each explaining 5.4 to 21.8% of the total genotypic variance for GER resistance. Among them, QTL q1 was stable across test environments, populations, and between inbred lines and testcrosses. The accuracies of genomic prediction ranged from 0.50 to 0.59 depending on the resistance donor and prediction model. Jointly, our study reveals the potential use of Brazilian resistance sources to increase GER resistance levels by genomics-assisted breeding. EEA Pergamino Fil: Galiano-Carneiro, Ana L. University of Hohenheim. State Plant Breeding Institute; Alemania Fil: Galiano-Carneiro, Ana L. Kleinwanzlebener Saatzucht (KWS) SAAT SE & Co. KGaA; Alemania Fil: Kessel, Bettina. Kleinwanzlebener Saatzucht (KWS) SAAT SE & Co. KGaA; Alemania Fil: Presterl, Thomas. Kleinwanzlebener Saatzucht (KWS) SAAT SE & Co. KGaA; Alemania Fil: Gaikpa, David Sewordor. University of Hohenheim. State Plant Breeding Institute; Alemania Fil: Kistner, María Belén. University of Hohenheim. State Plant Breeding Institute; Alemania Fil: Kistner, María Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Kistner, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Miedaner, Thomas. University of Hohenheim. State Plant Breeding Institute; Alemania |
| Databáze: | OpenAIRE |
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