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Three semidwarf wheat (Triticum aestivum L.) cultivars were each crossed to three standard-height cultivars, and bulk F2 and F3 generations of each cross were compared with parents in the field at two locations. Yield component and grain yield data of parents vs. bulks were evaluated to determine whether a relationship existed between bulk and parent populations. Yield component data did not consistently relate to grain yield in either bulks or parents. However, correlation coefficients of 0.89 and 0.81 suggested a strong yield relationship between standard-height parents vs. their bulks and semidwarf parents vs. their bulks, respectively. We conclude that the average performance of the parents generally predicted the average performance of the F2 and F3 bulks for culm number, kernel weight, and grain yield. Heterosis was indicated for spikelets per head in crosses with P.I. 295619. There were no differences between semidwarf and standard-height cultivars in ability to impart yield component and grain yield potential to their offspring.

White- and brown-glumed populations of spring wheat, Triticum aestivum L., derived by compositing seed from F2 plants and F3 lines, were evaluated at two locations for grain quality, grain yield, and other plant variables. The similarity of data from the two populations suggests that the gene, or genes, governing brown glume has little, if any, influence on most of the agronomic and quality characteristics of spring wheat, although small differences were observed in plant height at Bozeman, in spikelets per head at Huntley, and in farinograph stability at Bozeman.