Author(s):

Anil Kumar, Shweta Rani, Chandan Kishore, Anand Kumar, Sanjay Kumar, Ravi Ranjan Kumar, Fariha Adan and Thota Gopi Krishna

Abstract: Twenty-one progenies with their seven parent cultivars of Avena sativa L. (2n = 6x = 42) along with two checks were taken with a view to estimate genetic components of variance indicating different types of gene effects. The present work aimed at estimating the genetic component of variance in oats involving in the character grain yield, its components and protein content through 7×7 half diallele analysis to provide tools for the selection of high yielding genotypes at very early selfing generations exploiting the fixable effects. To utilize both types of genetic effects breeding methods like modified recurrent selection i.e. alternating pedigree and recurrent selection cycles, diallele selective mating, multiple crossing and early generation selection followed by intermating among F₂/F₃ generation selected plant. The experiment was laid down in Randomized Complete Block Design with three replication at Livestock Research Centre of G.B.P.U.A.&T., Pantnagar. Observations were recorded on twenty three quantitative characters namely days to 50 % heading, plant height at 50% heading, number of tillers per plant, number of leaves per plant, leaf length, leaf width, leaf area, flag leaf length, flag leaf width, flag leaf area, days to maturity, plant height at maturity, panicle length, number of spikelet per panicle, biological yield, grain yield, harvest index, 100- grain weight, 10- groat weight, groat protein content, protein yield, straw yield and growth rate. Genetic component of variance showed the preponderance of non-additive genetic variance and over dominance for all the characters except flag leaf width whereas the importance of genetic variance present with partial dominance was observed and the value (KD/KR) indicated the presence of dominant alleles in excess for most of the traits

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