EVALUATION OF THE INBRED–BACKCROSS METHOD FOR STUDYING THE GENETICS OF CONTINUOUS VARIATION

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Abstract
The inheritance of kernels per spike was studied in 73 inbred–backcross lines from the second backcross of Pitic 62 spring wheat to Neepawa. Data from two four-replicate experiments failed to show any evidence of influence by major genes. Similarly, kernel weight data from 91 inbred–backcross lines from the second backcross of Glenlea to Neepawa failed to show any influence of major genes. It is suggested that the inbred–backcross technique of Wehrhahn and Allard (1965) is of limited value in studying the genetics of quantitative traits except where the distribution of line performances is discontinuous.