Kirkuk University Journal for Agricultural Sciences (KUJAS)

Path coefficient analysis and estimation of some genetic parameters in F2 durum wheat

https://doi.org/10.58928/ku10.01115
Volume 1, Issue 1
Spring 2010
Page 15-22
Kirkuk University Journal for Agricultural Sciences (KUJAS)

Document Type : Research Paper

Authors

K M Dawod
Gh. A. T. AL- Hamdany

IRAQ

Abstract
Six characters of 28 F2 populations derived from 8×8 intervarietal half diallel cross of durum wheat (Triticum durum Desf.) were studied using RCBDesign with three replications. Genotypic and phenotypic variances were significant for all studied characters. Phenotypic and genotypic correlations were positive and highly significant between grain yield and each of No. of spikes per plant and biological yield. The phenotypic and genotypic path analysis showed that the No. of spikes per plant and biological yield had the highest direct effects on grain yield, and these two characters exhibited intermediate broad sense heritability (50.9 and 49.95 ) and expected genetic advance as percent of the character mean (31.07 and 29.50) respectively. Great importance of these two characters mentioned predicting grain yield with determination coefficient (13.7 and 32.84) and contributed percent of both (7.471%) among yield .

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