Genetic variability, heritability and genetic advance estimates in maize (Zea mays L.) inbred lines
Article Main
Abstract
Forty three genotypes of maize were evaluated for eleven traits at the College Farm, College of Agriculture, Rajendranagar, Hyderabad to study the genetic divergence and various genetic parameters. There was a significant (P<0.01) difference between genotypes for all the characters, which revealed wide range of variability and high heritability for all the characters. The genetic advance as percent of mean was high for grain yield per plant (73.19%), ear height (51.05%), number of kernels per row (44.40%), plant height (43.46%), 100 grain weight (42.88%), ear length (30.79%), number of kernel rows per ear (25.23%), and ear girth (22.37%) indicating additive gene action for these traits. D2 analysis partitioned the forty three genotypes in to six clusters. The maximum inter cluster distance (39.38) was observed between cluster I and cluster V. Grain yield per plant (38.43%), plant height (14.29%), 100 grain weight (12.85%) and number of kernels per row (12.07%) contributed greatly towards diversity.
Article Details
Article Details
Cluster analysis, Genetic advance, Heritability, Maize
Azad, M.A.K., Biswas, B.K., Alam, N. and Alam, Sk. S. (2012). Genetic diversity in maize (zea mays l.) inbred lines. The Agriculturists, 10(1): 64-70.
Bekele1, A. and Rao, T.N. (2014). Estimates of heritability, genetic advance and correlation study for yield and it’s attributes in maize (Zea mays L.). Journal of Plant Sciences, 2(1): 1-4.
Burton, G.W. and Devane, E.H. (1953). Estimating heritability in tall fescue (Festuca arundinacea) from replicated clonal material. Agronomy Journal, 45: 478-481.
Choudhary, A.K. and Chaudary, L.E. (2002). Genetic studies in some crosses of maize (Zea mays L.). Journal of Research Birsa Agricultural University, 14: 87-90.
Grzesiak, S. (2001). Genotypic variation between maize (Zea mays L.) single-cross hybrids in response to drought stress. Acta Physiologiae Plantarium, 23(4): 443-456.
Hanson, G.H., Robinson, H.F. and Comstock, R.E. (1956). Biometrical studies on yield in segregating population of Korean lespedesa. Agronomy Journal, 48: 268-272.
Krishnam Raju, K. (2001). Variability studies for protein content and grain yield in maize (Zea mays L.) genotypes. M.Sc. Thesis, Acharya N.G. Ranga Agricultural University, Rajendranagar, Hyderabad.
Kumar, G.P., Reddy, V.N., Kumar, S.S. and Rao, P.V. (2014). Genetic variability, heritability and genetic advance studies in newly developed maize genotypes (Zea mays L.). International Journal of Pure & Applied Bioscience, 2 (1): 272-275.
Li, C. M. and Yang, K.C. (1985). Studies on inheritance of quantitative characters for plant type in some inbred lines of maize. Scientia Agriculture Sinica, 19: 28-36.
Nzuve, F., Githiri, S., Mukunya, D. M. and Gethi, J. (2014). Genetic variability and correlation studies of grain yield and related agronomic traits in maize. Journal of Agricultural Science, 6(9): 166-176.
Rao, C.R. (1952). “Advanced statistical methods in biometrical Research”. John Wiley and sons, New York. pp 357 -369.
Reif J.C., Hallauer, A.R. and Melchinger, A.E. (2005). Heterosis and heterotic patterns in maize. Maydica, 50: 215-223.
Sofi, P. and Rather, A.G. (2007). Studies on genetic variability, correlation and path analysis in maize (Zea mays L.). University of Agriculture Sciences and Technology of Kashmir, Shalimar.
Teixeira, F.F., Andiade R.V.–De., Olivera A.C. de., Ferrira A-da-S., Santos-MS-dos. and dos-Santox-M. X. (2002). Maize germplasm diversity from north eastern region of brazil. Rovista brasilisa-de-Milho-e-Sorgol, 5: 59-67.
Zahid Mahmood., Malik, S.R., Raheel Akhtar. and Tariq Rafique. (2004). Heritability and genetic advance estimates from maize genotypes in Shishi Lusht a valley of Krakurm. International Journal of Agriculture and Biology, 6: 790-791.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)
