ESTIMATES OF GENETIC VARIABILITY, HERITABILITY AND GENETIC ADVANCE IN OATS (AVENA SP.) FOR SEED AND FODDER YIELD TRAITS
TANVI KUMARI, Y. JINDAL* AND SATPAL
Department of Genetics & Plant Breeding
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : yjindalhau@gmail.com)
(Received : 25 April 2017; Accepted : 30 June 2017)
SUMMARY
Fifty diverse genotypes of oats were evaluated for different qualitative and quantitative traits to assess the genetic diversity during rabi 2015-16. These genotypes were evaluated for 22 yield and its component traits to assess the genetic diversity. The genotypic and phenotypic coefficient of variations in terms of unit of their expression were observed highest for seed yield per plant, seed width and 100seed weight. Low estimates of genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were recorded for days to 50 per cent flowering, days to maturity, leaves per plant, culm diameter, flag leaf length, tillers per plant, plant height at maturity and green fodder yield per plant. The estimates of high heritability (broad sense) were noticed in almost all the characters like plant height, days to 50 per cent flowering, leaves per plant, flag leaf width, flag leaf length, leaf length, leaf width, culm diameter, number of nodes on the main tiller, days to maturity, tillers per plant, peduncle length, axis length, axis node number, green fodder yield per plant, dry fodder yield per plant, dry matter per cent, seed yield, 100-seed weight, seed length and seed width. The high estimates of genetic advance as per cent of mean were recorded for number of flag leaf length, flag leaf width, leaf length, leaf width, tillers per plant, peduncle length, axis length, green fodder yield per plant, dry matter per cent, seed yield, 100-seed weight and seed width. High heritability coupled with high genetic advance for traits viz., flag leaf length, flag leaf width, leaf length, leaf width, tillers per plant, peduncle length, axis length, green fodder yield per plant, dry matter per cent, seed yield, 100-seed weight and seed width.
Key words: Oats, genetic diversity, genetic variability parameters, heritability, genetic advance