Combining Ability and Heterosis of Qualitative Traits in Bread (Triticum aestivum L ) Wheat
Kirkuk University Journal For Agricultural Sciences,
2019, Volume 10, Issue 1, Pages 90-103
AbstractNine genotypes were used in this study [Intisar, Sham6, Tamuz 2, Ibaa 99, II-1, 25-1, 3-1, IRAQ, and Al-Rasheed] with its half diallels from bread wheat, where as these genotypes had been obtained from field crops Dept. of Agriculture college Tikrit University. These genotypes intered in half diallel crosses as a second method suggested by Griffing (1956). The parents and the crosses were cultivated in afarm of one farmers in Yaiegi section includes Kirkuk government by using RCBD design with three replicates. The data of traits (protein, percentage, percipectation size, refined ratio, moistued gluetin ratio , ash and hamidty percentage) . Analysis of variance showed that the mean squares of the genotypes (The parents), (Crosses) (parents and crosses) and (The genotypes And parents and for parents vs Crosses and Crosses) were sighnificant at 1% level of probability for all the studied traits, except the parents vs. crosses and the crosses of zeleny trait and the Granularity alidnot reached to the significant level . The parent (1) was surpassed on all the parents, which the parent (1) Surpassed in all atudied traits unless (9) which surpassed in protein trait . One to the crosses we saw that the cross )6×2( , )4×1( , )4×2( , )7×1( and )5×1( . The ratio between general combining ability components to specific combining ability was more than one for all studied traits . The best parents were desire as a significant in general combining ability was the parent(1) which surpassed by all traits and the (4) paront supcrier in four trait protein % percipectation size, glutien ash and hamidty percentage . The best crosses whish were disre as significant type in specific combining ability were the crosses
)6×1( and )5×2( for five traits , percipectation size , refined ratio glutien% hamidty percentage . The crosses )6×4(,
)9×6(,)6×3( , )9×4( , )4×2( , )9×2( and )9×6( were best performenced in most studied traits in effects of specific combining ability to desired direction and gave highest desired heterosis and significant with two estimate methods (on deviation on the first fillial from mid parents and the best of them as aratio) .
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