Performance of uniblends and biblends in bread wheat
2002
Akram, M.
Five wheat varieties/lines were sown in a diallel fashion. There were ten mixtures and five pure stands. The genotypes manifested a differential behaviour for all the morphological characters i.e., plant height, number of tillers, spike length, number of spikelets per spike, number of grains per spike, 1000-grain weight and also the economic yield. The LER values were 1.15, 1.18, 1.01, 1.15 and 1.09 for the five combinations MH- 97 + Pb.96, MH-97 + Inqilab 91, MH-97 + LU26S, Pb.96 + LU26S and Inqilab 91 + Uqab 2000 indicating 15.26, 18.10, 1.56, 15.26 and 7.75 % increase in grain yield over their mid parents, respectively. However, the remaining mixtures reduced in grain yield. It was also observed that the differences between components may produce differences in their competitive ability, but the competitive and yielding ability of genotypes are not always synonymous. It is evident from this experiment that genotype mixtures can utilize environmental resources more efficiently than their pure stands. The varietal mixtures do have potential as a means of increasing crop yields, but identification of correct genotype combination is very essential.
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