Frequency of heterosis in different cultivars of durum wheat


Agricultural University of Tirana, Agricultural and Environmental Faculty, Crop Production Department

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Five cultivars and ten their F1 and F2 hybrids were tested for inheritance of quantitative traits To achieve this aim, the difference between mean values of each F1 and F2 trait were used. These values represent the loss of allelic gene interaction during reproductive process. Using a method different from standard methods, we have determined the parental general combining ability (GCA) and influence of allelic and non allelic gene interaction, that arise during hybridization. The results revealed that these values are negative or positive, influencing negatively or positively on traits value of progeny. When the values of allelic and non-allelic interaction are equal, but inverse sign, have not heterotic effect. Analyzing the results can see also, that between allelic and non-allelic gene interaction, for cultivars in this study, exist an opposite dependency , as you can see in their rankings. According to GCA, 5/11-1 cultivar had higher values of GCA, so it is better than others, to insure a better inheritance of traits.

Key words: cultivar, inheritance, gene, allelic and non allelic gene interaction, heterosis, hybrid

Post Author: MVhDC39RHa