تحليل القدرة العامة على الاتحاد و الفعل الجيني في الحنطة الخشنة Triticum Durum L. باستخدام التهجين التبادلي الجزئي

Abstract EN

The study was carried out using 11 introduction genotypes of the durum wheat (DW36 ‘ DW30, DW7, DW17, DW45, DW38, DW26, DW10, DW15, DW47, 22)in addition to registered and certified in Iraq (Baghdad) and the crosses them were made according to the partial diallel cross system to study GCA effects and type of gene action that controlled number of days to 50% flowering* plant height* leaf eara* number of spike » number of grain per spike * 1000 grain weight and grain yield per plant.

The results showed that mean square of genotypes , gca and sea was highly significant for all traits except number of spike.

The ratio of agca/asca components was grater than unity for days to 50% flowering* number of spike* number of grain per spike suggesting that additive component was importane to control these traits and the selection in early generation may be fruitful for more traits, while the other traits were controled by non-additive gene effects and over dominance gene action.

Parents 1, 4, and 11 were Distinguished as a desired effects of the most of traits and it was possible to use their breeding value in hybridization programs to improve their traits.