Stem solidness and its relationship to grain yield in 17 spring wheat crosses |
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Authors: | F. H. McNeal M. A. Berg |
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Affiliation: | (1) U.S. Dept. of Agriculture, Federal Research, Science and Education Administration, 59717 Bozeman, MT, USA |
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Abstract: | Summary Stem solidness in the wheat plant provides resistance to the wheat stem sawfly, a pest of wheat in Montana and North Dakota, but some agronomists have been concerned that stem solidness might be related to low grain yields. We evaluated 17 spring wheat crosses for stem solidness, grain yield, and other agronomic traits in F2 through F4 generations from 1972 to 1975.Highly significant correlation (0.735) and regression (0.731) coefficients between F2 and F3 generations verify previous studies showing that stem solidness is highly heritable and that selection in F2 should be successful. Solid-stemmed F4 composites yielded more than hollow stemmed composites at Bozeman and equal yields were obtained at Huntley, indicating that stem solidness is not a deterrent to high grain yield.Joint contribution of Federal Research, Science and Education Administration, U.S. Department of Agriculture and the Montana Agricultural Experiment Station, Bozeman, MT 59717. Published with approval of the Director of the Montana Agricultural Experiment Station as Paper No. 815, Journal Series. |
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Keywords: | Triticum aestivum wheat stem solidness Cephus cinctus wheat stem sawfly resistance |
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