title: Genome-based establishment of a high-yielding heterotic pattern for hybrid wheat breeding.
abstract: Hybrid breeding promises to boost yield and stability. The single most important element in implementing hybrid breeding is the recognition of a high-yielding heterotic pattern. We have developed a three-step strategy for identifying heterotic patterns for hybrid breeding comprising the following elements. First, the full hybrid performance matrix is compiled using genomic prediction. Second, a high-yielding heterotic pattern is searched based on a developed simulated annealing algorithm. Third, the long-term success of the identified heterotic pattern is assessed by estimating the usefulness, selection limit, and representativeness of the heterotic pattern with respect to a defined base population. This three-step approach was successfully implemented and evaluated using a phenotypic and genomic wheat dataset comprising 1,604 hybrids and their 135 parents. Integration of metabolomic-based prediction was not as powerful as genomic prediction. We show that hybrid wheat breeding based on the identified heterotic pattern can boost grain yield through the exploitation of heterosis and enhance recurrent selection gain. Our strategy represents a key step forward in hybrid breeding and is relevant for self-pollinating crops, which are currently shifting from pure-line to high-yielding and resilient hybrid varieties.
authors.affiliation: Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Yusheng
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Zuo
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Guozheng
authors.initials: G
authors.lastname: Liu
authors.affiliation: Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Yong
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: State Plant Breeding Institute, University of Hohenheim, 70593 Stuttgart, Germany;
authors.forename: Hans Peter
authors.initials: HP
authors.lastname: Maurer
authors.affiliation: State Plant Breeding Institute, University of Hohenheim, 70593 Stuttgart, Germany;
authors.forename: Tobias
authors.initials: T
authors.lastname: Würschum
authors.affiliation: Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Mock
authors.affiliation: Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany;
authors.forename: Andrea
authors.initials: A
authors.lastname: Matros
authors.affiliation: Wheat breeding, KWS LOCHOW GmbH, 29296 Bergen, Germany;
authors.forename: Erhard
authors.initials: E
authors.lastname: Ebmeyer
authors.affiliation: Wheat breeding, Nordsaat Saatzuchtgesellschaft mbH, 38895 Langenstein, Germany;
authors.forename: Ralf
authors.initials: R
authors.lastname: Schachschneider
authors.affiliation: Wheat breeding, Lantmännen SW Seed Hadmersleben GmbH, 39398 Hadmersleben, Germany;
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Kazman
authors.affiliation: Wheat breeding, Limagrain GmbH, 31226 Peine-Rosenthal, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Schacht
authors.affiliation: State Plant Breeding Institute, University of Hohenheim, 70593 Stuttgart, Germany;
authors.forename: Manje
authors.initials: M
authors.lastname: Gowda
authors.affiliation: State Plant Breeding Institute, University of Hohenheim, 70593 Stuttgart, Germany;
authors.forename: C Friedrich H
authors.initials: CF
authors.lastname: Longin
authors.affiliation: Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, 06466 Stadt Seeland, Germany; reif@ipk-gatersleben.de.
authors.forename: Jochen C
authors.initials: JC
authors.lastname: Reif
mesh_terms: D000465:Algorithms; D018556:Crops, Agricultural; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D000069600:Plant Breeding; D040641:Quantitative Trait Loci; D012639:Seeds; D014908:Triticum / Q000235:genetics*
keywords: genomic prediction; heterotic pattern; hybrid breeding