WHEAT QUALITY EVALUATION. 3. INFLUENCE OF GENOTYPE AND ENVIRONMENT

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Abstract
Agronomic and quality data from eastern Canadian spring and winter wheat trials, for an equivalent of 15 trial yr, were analyzed to determine the relative effects of genotype and environment on quality. Considerable genetic variability was detected for many of the 19 measurements studied, indicating that positive results from selection could still be expected in these populations. A large environmental effect was observed for yield, protein and protein related parameters. The consequence of this environmental modification was considered with regard to breeding programs. Except for a few instances, genotype × year and genotype × location interactions were found to be relatively insignificant. However, indirect evidence suggested that the genotype x year × location interaction could be of greater concern.

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