Negative dominance and dominance-by-dominance epistatic effects reduce grain-yield heterosis in wide crosses in wheat.
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ABSTRACT:
SUBMITTER: Boeven PHG
PROVIDER: S-EPMC7292627 | biostudies-literature | 2020 Jun
REPOSITORIES: biostudies-literature
Publications
Negative dominance and dominance-by-dominance epistatic effects reduce grain-yield heterosis in wide crosses in wheat.
Boeven Philipp H G PHG Zhao Yusheng Y Thorwarth Patrick P Liu Fang F Maurer Hans Peter HP Gils Mario M Schachschneider Ralf R Schacht Johannes J Ebmeyer Erhard E Kazman Ebrahim E Mirdita Vilson V Dörnte Jost J Kontowski Stefan S Horbach Ralf R Cöster Hilmar H Holzapfel Josef J Jacobi Andreas A Ramgraber Ludwig L Reinbrecht Carsten C Starck Norbert N Varenne Pierrick P Starke Anne A Schürmann Friederike F Ganal Martin M Polley Andreas A Hartung Jens J Beier Sebastian S Scholz Uwe U Longin C Friedrich H CFH Reif Jochen C JC Jiang Yong Y Würschum Tobias T
Science advances 20200612 24
The genetics underlying heterosis, the difference in performance of crosses compared with midparents, is hypothesized to vary with relatedness between parents. We established a unique germplasm comprising three hybrid wheat sets differing in the degree of divergence between parents and devised a genetic distance measure giving weight to heterotic loci. Heterosis increased steadily with heterotic genetic distance for all 1903 hybrids. Midparent heterosis, however, was significantly lower in the h ...[more]
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