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Genomic prediction of the recombination rate variation in barley - A route to highly recombinogenic genotypes.
Casale, Federico; Van Inghelandt, Delphine; Weisweiler, Marius; Li, Jinquan; Stich, Benjamin.
Afiliación
  • Casale F; Institute of Quantitative Genetics and Genomics of Plants, Heinrich Heine University, Düsseldorf, Germany.
  • Van Inghelandt D; Institute of Quantitative Genetics and Genomics of Plants, Heinrich Heine University, Düsseldorf, Germany.
  • Weisweiler M; Institute of Quantitative Genetics and Genomics of Plants, Heinrich Heine University, Düsseldorf, Germany.
  • Li J; Max Planck Institute for Plant Breeding Research, Köln, Germany.
  • Stich B; Strube D&S GmbH, Söllingen, Germany.
Plant Biotechnol J ; 20(4): 676-690, 2022 04.
Article en En | MEDLINE | ID: mdl-34783155
Meiotic recombination is not only fundamental to the adaptation of sexually reproducing eukaryotes in nature but increased recombination rates facilitate the combination of favourable alleles into a single haplotype in breeding programmes. The main objectives of this study were to (i) assess the extent and distribution of the recombination rate variation in cultivated barley (Hordeum vulgare L.), (ii) quantify the importance of the general and specific recombination effects, and (iii) evaluate a genomic selection approach's ability to predict the recombination rate variation. Genetic maps were created for the 45 segregating populations that were derived from crosses among 23 spring barley inbreds with origins across the world. The genome-wide recombination rate among populations ranged from 0.31 to 0.73 cM/Mbp. The crossing design used in this study allowed to separate the general recombination effects (GRE) of individual parental inbreds from the specific recombination effects (SRE) caused by the combinations of parental inbreds. The variance of the genome-wide GRE was found to be about eight times the variance of the SRE. This finding indicated that parental inbreds differ in the efficiency of their recombination machinery. The ability to predict the chromosome or genome-wide recombination rate of an inbred ranged from 0.80 to 0.85. These results suggest that a reliable screening of large genetic materials for their potential to cause a high extent of genetic recombination in their progeny is possible, allowing to systematically manipulate the recombination rate using natural variation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hordeum Tipo de estudio: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Plant Biotechnol J Asunto de la revista: BIOTECNOLOGIA / BOTANICA Año: 2022 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hordeum Tipo de estudio: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Plant Biotechnol J Asunto de la revista: BIOTECNOLOGIA / BOTANICA Año: 2022 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido