Analysis of gene effect in the inheritance of number of kernels per spike in wheat
1994
Dimitrijevic, M. | Petrovic, S. | Kraljevic-Balalic, M. (Faculty of Agriculture, Novi Sad (Yugoslavia). Institute for Field and Vegetable Crops, Department of Genetics and Plant Breeding)
Regression analysis of covariance (Wr) and variance (Vr) in diallel crosses was conducted to determine gene effects on the number of kernels per spike of five wheat genotypes: NS rana 2, Bankut 1205, NS 732, Atlas 66 and Siete Cerros 66. Analysis of parents and F1 progenies showed no non-allelic interactions so the model was adequate. Graphical analysis of Vr/Wr regression indicated that the number of kernels per spike was conditioned mainly by dominance gene effects, as well as unequal arrangements of dominant and recessive genes between the five parental wheat genotypes. On the basis of the study it was concluded that, in general, alleles increasing the number of kernels per spike are dominant and that recessive genes for this trait have the opposite effect.
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