Figure 9.

The proportional contributions of parental alleles to increased trait values depend upon trait, environmental water content, and plant developmental stage. Alleles derived from the B100 parent contribute a greater proportion of additive genetic variance to plant size, water use, an WUE model fit in both well-watered and water-limited conditions than their A10 allelic counterparts. Both the WUE ratio and WUE model residual traits exhibit dynamic behavior, where A10 alleles contribute either greater or close to equal proportions of additive genetic variance early and late in plant development. A, Contribution of parental alleles in the water-limited treatment block. B, Contribution of parental alleles in the well-watered treatment block.