Correlation studies among yield and its components in bread wheat under drought conditions

Munir, M. . Dept. of Plant Breeding and Genetics; Chowdhry, M.A. . Dept. of Plant Breeding and Genetics; Malik, T.A.

Correlation studies among yield and its components in bread wheat under drought conditions

2007

Munir, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Breeding and Genetics) | Chowdhry, M.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Breeding and Genetics) | Malik, T.A.

Correlation studies were undertaken for ten yield related traits in two bread wheat crosses derived from crossing Kohistan-97 (high yielding) with Inqlab-91 (medium yielding) and Chakwal-86 (low yielding) under drought conditions. In general genetic correlation coefficients were greater than the corresponding phenotypic correlations. Grain yield per plant showed a positive and significant correlation with flag leaf area, tillers per plant, spike length, grains per spike, grain weight per spike and 1000-grain weight in both the crosses. The interrelationship between these traits showed that they are under the control of certain common genes, which can be exploited as selection criteria in breeding programs. The positive selections for one trait would also improve the other correlated traits. The interrelationship among these traits studied revealed that grain yield could be efficiently increased by obtaining maximum expression of tillers per pl ant, spike length, grains per spike and 1000-grain weight under drought conditions. The varieties Kohistan-97 and Inqlab-91 may be used in breeding programs to tailor for drought resistance in wheat.

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