Abstract
Five genotypes of two-rowed barley (Hordeum distichum L.) named MORA, ABN-B, Arabi Aswad, Clipper and Bohoth H1 with their twenty F 1 progeny were evaluated inKurdistan Region-Iraq at three different locations, Erbil-Grdarasha, Garmian-Kalar andSulaimani-Qilyasan during the winter season 2011-2012 using Randomized CompletelyBlock Design (RCBD) with three replications in order to study the homeostasis andgenotypic resultant growth and spike characters. The results revealed highly significanteffects due to genotypes × locations in most of the studied characters with exception offlag leaf length, spike length, and grin weight / spike. Parent 1 was the best genotypewhich had the highest homeostasis values for five characters no. of grain / spike (0.936),flag leaf length (0.915), peduncle diameter (0.962), spike length (0.933) and no. ofspiklets / spike (0.975), while the hybrid (1×2) had the highest homeostasis values forthree characters flag leaf length (0.985), spike length (0.988), and no. of spiklets / spike(0.990). So the homeostasis of these genotypes needs to be better evaluated in a set ofenvironments tested across different years. Very high genotypic resultant values wereobtained for no. of grain / spike (1.135 by the hybrid 2×5), flag leaf length (1.074 by thehybrid 5×4), spike length and no. of spikelets / spike (1.061 and 1.059, respectively bythe hybrid 2×5) indicating these genotypes having high performances at differentenvironments and should be not ignored in future studies.
Published Version
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