Summary
This experimental study challenges the widely held assumption that domestication has reduced competitive ability in wheat by comparing 39 durum wheat genotypes across four domestication stages. Contrary to theory, domesticated varieties exhibited greater competitive resilience than wild progenitors despite wild types showing higher phenotypic plasticity. The findings suggest that domesticated cultivars are well-adapted to competitive agricultural environments and question the necessity of reintroducing wild-type traits to improve inter-plant competition.
UK applicability
These findings are relevant to UK cereal breeding programmes and agronomic practice, suggesting that modern domesticated wheat varieties may be optimally suited to competitive field conditions without requiring introgression of wild traits. However, the pot-based experimental design may not fully reflect field-scale competitive dynamics or UK-specific soil and climate conditions.
Key measures
Biomass, leaf thickness, root thickness, phenotypic plasticity indices, competitive resilience (biomass loss under competition)
Outcomes reported
The study measured biomass loss under competition, above- and belowground functional traits, and phenotypic plasticity across 39 durum wheat genotypes representing four domestication stages. Competitive ability was assessed by comparing plant performance when grown alone versus in competition with neighbouring genotypes.
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