Abstract
Inheritance of stem solidness was studied in populations of F3 and B2 lines from the Red Bobs × C.T. 715 and Redman × S-615 (Triticum aestivum L.) crosses and backcrosses. The data supported the hypothesis that the varieties in each cross differed by four genes for stem solidness. In both crosses, one gene exerted a major influence in that its allele for hollowness in the homozygous condition was epistatic to the other three genes. The other three genes within each cross were similar in their influence on solidness. Between the two crosses, corresponding genes differed in some degree.Genetic analyses and correlation coefficients both revealed a close association between sawfly resistance and stem solidness in the Red Bobs × C.T. 715 cross indicating that the stem solidness character was largely responsible for conditioning the degree of sawfly reaction in a plant.In both crosses, a weak negative correlation was found between stem solidness and height. Stem solidness was not associated with bunt (race T-2) reaction, glume color, awn type, or heading date.
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