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Cultivar-specific changes in total rapeseed oil (A), and the fatty acids C18:1 (B) and C18:3 (C) content in the climate treatments, CO2, T, O3, CO2+T and CO2+T+O3, relative to the ambient value (absolute change±standard error). Derived from Eqn (1) with cultivar effects kept fixed. Asterisks (***P<0.001, **P<0.01, *P<0.05) indicate cultivar-specific responses to the corresponding treatment.
