The inheritance and phenotypic variability of the number of kernels per spike in wheat
1994
Petrovic, S. | Kraljevic-Balalic, M. | Dimitrijevic, M. (Faculty of Agriculture, Novi Sad (Yugoslavia). Institute for Field and Vegetable Crops, Department of Genetics and Plant Breeding)
Five divergent wheat varieties (NS Rana 2, Bankut 1205, NS 732, Atlas 66 and Siete Cerros 66) were diallelly crossed in order to examine the mode of inheritance and the components of phenotypic variability for the number of kernels per spike. Dominance was observed in F1 progenies in most of the crosses, and some of them showed overdominance. Analysis of phenotypic variability components revealed that dominant genes prevailed over recessive, and that the main part of genetic variation belonged to the dominant gene effect, as well. Positive and negative allelles at dominant loci were not in equal proportions in parents. The value of the mean dominance degree indicated overdominance as an average in all the crosses.
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