Agronomic Performance and End‐Use Quality of 1B vs. 1BL/1RS Genotypes Derived from Winter Wheat ‘Rawhide’

The winter wheat (Triticum aestivum L.) cultivar Rawhide is heterogenous for the 1BL/1RS translocation. The 1BL/1RS translocation has been proven to increase grain yield and decrease end‐use quality in bread wheat. The objective of this research was to investigate if the excellent yield performance of Rawhide was due to higher yielding 1BL/1RS lines compensating for lower yielding 1B lines and if the acceptable quality of Rawhide was produced by higher end‐use quality 1B lines compensating for lower end‐use quality 1BL/1RS lines. To do so, 19 homogeneous 1B genotypes and 18 homogeneous 1BL/1RS genotypes were selected from Rawhide. These genotypes, three composites (Composite 1B, Composite 1BL/1RS, and Composite Total), Raw‐hide, and three check cultivars, were evaluated in four Nebraska environments for grain yield, yield components, and end‐use quality traits. No significant differences were found between chromosome classes for grain yield. The 1BL/1RS genotypes had a higher kernel weight (4%) than IB genotypes; however, the 1B genotypes had a greater number of spikes per square meter (5%). Composites were no different from Rawhide and from each other for grain yield and yield components. For end‐use quality traits, the 1BL/1RS genotypes had a higher protein content (137 mg g−1)> similar mixing time (4.8 min), and lower mixing tolerance (3.5) than 1B genotypes (132 mg g−1, 5.0 min, and 4.9, respectively). However, a mixing tolerance value of 3.5 is acceptable. In general, no differences were found among the composites and between the composites and Rawhide for quality traits. Hence, the 1BL/1RS translocation was not beneficial for yield nor was it detrimental for end‐use quality in this genetic background.