Abstract
Coleoptile length and culm length inheritance were studied in F1 and F3 populations from spring wheat (Triticum aestivum L.) crosses involving ‘Olesen's Dwarf’ and five tall cultivars with relatively long coleoptiles. In F2 populations studied both characters were quantitatively inherited. Broad‐sense heritability estimates were high for culm length and coleoptile length. Dominance for short culm length was expressed in the O D X ‘Lee’ F1, and coleoptile lengths of the F1 of O D X Lee, O D X ‘10‐VI‐5’, and O D X ‘Chris’ exceeded those of their midparents. Both additive and nonadditive gene action was detected in all crosses except one. Calculated minimum gene numbers were higher for culm length than for coleoptile length. Significant correction correlations were obtained between culm length and coleoptile length; however, coefficient of determination values (r2) were low.
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