Academic Research Journal of
Agricultural Science and Research
Academic Research Journal of Agricultural Science and Research
Vol. 3(10), pp. 296-303. October, 2015.
Full Length Research
Studies of Heritability, Genetic Parameters, Correlation and Path Coefficient in Elite Maize Hybrids
Hailegebrial Kinfe1, Yemane Tsehaye2
1Tigray Agricultural Research Institute, Shire Center, Shire, Ethiopia
2 Department of Plant Breeding and Agronomy, College of Dry land Agriculture, Mekelle university, Mekelle, Ethiopia
Accepted 26 September 2015
A total of
forty eight maize hybrids produced through a line by tester mating
design with two checks of BH-546 and BH-547 were evaluated at Bako
National Maize Research Center on station under rain fed condition in
2013 using alpha lattice design with two replications to determine the
heritability, genetic advance, correlation and genetic parameters
governing the inheritance of grain yield and related agronomical traits.
Knowledge of the magnitude of genetic variability, heritability and
genetic gains in selection of desirable characters could assist the
plant breeder in ascertaining criteria to be used for the breeding
programmes. The characters days to anthesis and silking, plant height,
ear height, number of seeds per row, number of kernel rows per ear, ear
length and diameter, 100 seed weight, and grain yield revealed higher
values of heritability. High genetic advance coupled with heritability
was observed for plant height, grain yield and number of kernel rows per
ear. Thus selection based on these traits will be effective in maize
breeding program. Genotypic and phenotypic correlation study among days
to anthesis and silking showed highest positive significant association.
Grain yield was positively and strongly correlated with ear length and
diameter, ear height and plant height. The positive relationships
observed in this study imply that the desirable traits in these hybrids
could be exploited in further breeding activities for the development of
composites and synthetics for the resource constrained maize farmers who
cannot access hybrid seeds every year. The highest direct positive
effect was obtained for ear diameter, days to 50% anthesis, anthesis
silking interval, ear length and plant height, these traits were the
most important yield contributing factors and an attempt should,
therefore, be made for an effective selection of these traits.
How to cite this article: Kinfe H, Tsehaye Y (2015). Studies of Heritability, Genetic Parameters, Correlation and Path Coefficient in Elite Maize Hybrids. Acad. Res. J. Agri. Sci. Res. 3(10): 296-303.