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A diallel cross analysis of heading date in wheat

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  • Crumpacker, David W.
  • Allard, R. W.

Abstract

A complete diallel cross of 10 selected wheat varieties was grown for three years (1957-1959) at Davis, California, to determine whether genetic information useful in the breeding of self-pollinated plants could be obtained from parental and F1 data. The character studied was heading date. Analysis of the data indicated that a few major genes with dominance effects were the most important feature of the genetic system. A system of minor genes displaying little or no dominance was also discovered. There was no evidence for any important epistatic effects. The various genotypes were found to behave fairly similarly over the three-year period. Variances and frequency distributions observed in 7 F2 test populations and certain other segregating generations grown in 1958 corresponded closely in most cases to those predicted on the basis of the 1957 diallel cross analysis.

Suggested Citation

  • Crumpacker, David W. & Allard, R. W., 1962. "A diallel cross analysis of heading date in wheat," Hilgardia, California Agricultural Experiment Station, vol. 32(6).
    • Handle: RePEc:ags:hilgar:381278
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