Correlation and Path Coefficient Analysis of Yield and Agronomic Characters among some Maize Genotypes and Their F1 Hybrids in a Diallel Cross

Dana Azad Abdulkhaleq, Sherwan Ismael Tawfiq
Field Crops Department, Faculty of Agricultural Sciences, University of Sulaimani

Grain yield in maize (Zea mays L.) can be improved by understanding the
interrelationships among yield, yield components, vegetative growth, and growth period.
The objective of this study was to determine the relationship among some of the most
important growth and yield traits by using correlation coefficient and path coefficient
Data were obtained to from 25 F1 hybrids including reciprocals in a diallel mating
design. Kernels yield plant-1 had positive and significant correlation with No. of kernels
row-1, kernels weight ear-1 at both locations, and with cob weight at Kanipanka location,
while has no significant correlation with the other characters. Path analysis indicated
that kernel weight ear-1, No. of ears plant-1, and No. of kernels row-1 showed high direct
effect on kernel yield plant-1 at Kanipanka location, while at Qlyasan location No. of
kernel row-1, 300-kernel weight, No. of ears plant-1, and kernel weight ear-1 showed the
high direct effect on kernel yield plant-1, these traits can be considered as principal yield
component and the breeder can be use these as selection criteria for kernel yield

Key words: Maize, Zea mays L., Correlation coefficient, Path coefficient analysis.


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