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To locate the genes controlling water-use efficiency (WUE), harvest index (HI) and evapotranspiration efficiency (ETE), some wheat substitution lines of Cappelle into the genetic background of Chinese spring were grown in a completely randomized block design, with three replications and under water-stress conditions, in a glasshouse. of the College of Agriculture, Razi
significant correlation coefficient between grain yield (GY) and ETE
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(r=0.65 ), It is therefore possible to simultaneously select for HI and ETE
for improvement of WUE and GY under water stress conditions. Substitution


























University of Kermanshah. The Results of statistical analysis indicated high
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correlation coefficients between HI and WUE (r=0.75 ) as well as HI with
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grain yield (r= 0.78 ). The relative contribution of HI to the variation of
WUE (0.75) was higher than that of ETE (0.25). As there was also a high
analysis of WUE, HI and ETE indicated that most of the genes controlling WUE, ETE, HI and GY were on chromosomes 7D, 1D and 6A, respectively.
With regaro LO the relative contributin of HI to the variation of WUE and high correlation coefficient between HI and GY, as lUOSt of the genes controlling HI aHa GY are on chromosome 6A, hence it can be concluded
. that, according to the results of this experiment, Chromosome 6A can play an
outstanding role in the simultaneous improvf11t of WUE, HI and GY.