1Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India
2Department of Biotechnology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India
3Department of Millets, Center for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore, India
4Department of Plant Biotechnology, Center for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, India
5Department of Plant Molecular Biology and Bioinformatics, Center for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
*E-Mail: senthil_natesan@tnau.ac.in
Online published on 2 July, 2019.
Genetic variability, heritability and genetic advance are the important factors which provides the knowledge about the nature of traits in breeding programme. The aim of this study is to estimate the genetic variability, heritability, and genetic advance in the backcross population of UMI1200β+ × HKI163 and UMI1230β+ × HKI163 to identify the individuals in the population with superior agronomic traits. Fourteen biometrical traits were analysed and thus revealed that all the backcross (BC1F1, BC2F1) and selfed (BC2F2) generations, phenotypic coeffiecient of variation is higher than the genotypic coefficient of variation. Highest heritability combined with genetic advance as percent of mean was observed in BC2F2 generation for 100 kernel weight (UMI1200β+ × HKI163) and single plant yield (UMI1230β+ × HKI163). Hence, the genetic gain of the individuals in the population are controlled by additive gene action.
Maize, genetic variability, heritability, genetic advance, marker assisted backcross breeding
