Estimation of gene action through triple test cross in common wheat (Triticum aestivum L.) Singh S. P.1, Singh L. R., Kumar P.1, Kumar R.2, Singh Geeta Department of Genetics & Plant Breeding, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur-208002. 1R.A.R.S., Bharari, Jhansi 2C.S.J.M. University Online published on 20 September, 2012. Abstract Twenty-five homozygous varieties of common wheat (Triticum aestivum L) were crossed to a single tester, to estimate the gene action for tillers/plant, grains/splke and yield/plant in 1994-95 and 1995-96. Epistasis was detected by two independent comparisions (2 B1 i-F1 i-pi and 2BCi-Fl i) for grainslsplke and yield/plant in both the years and for tillers/plant in 1994-95. Additive gene action was signlficant for all the traits in both the years, whereas dominance action was present for tillers/plant and grain yield in both the years and for grains/spike in 1994-95 the degree of dominance was 0.45-0.49 in 1994-95 and 0.36-0.58 in 1995-96 for the various traits. Top Keywords Gene action, triple-test cross, epistasis, common wheat. Top |