Studies on yield and yield components in spring wheat under drought conditions
1995
Bhutta, M.A. | Masih, Y. | Chawdhry, M.A. | Khaliq, I. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Breeding and Genetics)
Two local wheat varieties (Pak81 and LU26S) were crossed with three exotic lines namely HABA-1, HABA-4 and HABA-6. Their F1, F2, BC1 and BC2 generations were studied during 1991 at University of Agriculture, Faisalabad to estimate narrow and broad sense heritabilities for yield and yield components. Moderate to high broad sense estimates of heritability were obtained for all the traits except number of tillers per plant. The latter was low to moderately high. Narrow sense estimates were low to moderate for some of the traits and low to high for the others. High broad sense and low narrow sense heritabilities indicated non-additive gene effects and/or epistasis. Prospects were bright for genetic improvement of all seven traits notably in a HABA-6 x LU26S cross. Thus the present findings had a greater significance in synthesizing a variety for drought areas.
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