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Phenotypic correlations between low- and medium-yielding environments for each Semi-Arid Wheat Yield Trials (SAWYTs) grown from 2002–2003 (10th SAWYT) to 2013–2014 (21st SAWYT). 95% confidence intervals are indicated by the shaded area. Significance levels: *** p < 0.001, ** p < 0.001, * p < 0.05.
