Claim · model-written summary
Hybrid performance in wheat is mainly driven by parental per se performance.
- Taxon
- wheat
Triticum aestivume0 - Outcome
- hybrid performancee0
- Qualifier
- parental per se performancee0
Verbatim
e0“hybrid performance in wheat is mainly driven by parental per se performance”
Title
Design and assessment of breeding strategies for hybrid wheat in Europe
Philipp H. G. Boeven University writing server of the University of Hohenheim (Universität Hohenheim) 2019
Other claims from this paper (18)
- Observation A worldwide panel of winter wheat varieties showed no major population structure but genetically distinct subgroups.
- Mechanism Most global diversity trends in the winter wheat panel were explained by breeding history and associated with geographical origin and long-term domestication.
- Mechanism The frequency of copy number variants at Ppd-B1 and Vrn-A1 reflects wheat adaptation to the environmental conditions of the regions of origin.
- Recommendation The authors proposed HyBFrame, a framework for using global wheat genetic diversity to support reciprocal recurrent selection for genetically distinct heterotic groups.
- Observation Wheat hybrids from elite and from exotic crosses showed an average midparent heterosis of about 10%.
- Observation No evidence was observed for a breakdown of heterosis under maximized genetic distance among the hybrid parents.
- Observation Genetic distance from genome-wide molecular markers showed only a very weak association with midparent heterosis for grain yield.
- Association A novel functional Rogers distance weighting heterosis loci showed a strong positive association with heterosis.
- Mechanism A higher number of negative dominance and dominance-by-dominance epistatic effects can reduce absolute heterosis in wide crosses between exotic lines and elite testers.
- Recommendation Elite lines are favorable for hybrid wheat breeding and should be used as starting material for heterotic grouping.
- Observation Seed set of 31 male lines on two female testers showed large genotypic variation and high heritability.
- Observation Seed set showed a strong association with visual anther extrusion.
- Observation In a panel of 209 diverse wheat lines, all male floral traits had a complex genetic architecture.
- Observation The Reduced height gene Rht-D1 was identified as the only major QTL for male floral traits.
- Association The commonly used height-reducing Rht-D1 allele had negative effects on male floral traits.
- Method / resource Genomic prediction yielded moderate to high prediction abilities for anther extrusion.
- Mechanism The genetic architecture with many moderate- or small-effect QTL limits classical marker-assisted selection.
- Recommendation The authors proposed a breeding scheme to increase cross-pollination in wheat combining phenotypic and genomics-assisted selection.
Triticum turgidum subsp. durum