Evaluation of Various Agro-Morphological and Genetic Parameters of Single Cross Doubled Haploid Maize Hybrids
Evaluation of Various Agro-Morphological and Genetic Parameters of Single Cross Doubled Haploid Maize Hybrids
Madad Ali1, Muhammad Ahsan1, Muhammad Zubair Akram*2 and Samreen Nazeer3
ABSTRACT
Maize (Zea mays L.) is among the most important crops in the world for its nutritional value and productivity. Skyrocketing populations demand more food to consume without expansion in agricultural land which can be achieved by utilizing hybrid vigor. A field trial during 2018 was conducted at the University of Agriculture Faisalabad to screen out the best single cross doubled haploid hybrids of maize using eleven doubled haploid single cross hybrids. A randomized complete block design was used to conduct the experiment with three replications under normal environmental conditions. Data for different growth, yield, and agro-morphological parameters were analyzed at a 5% probability of the HSD test. Significant differences were present among the doubled haploid maize hybrids for all the studied agro-morphological parameters. Grain’s yield showed the highest positive and significant genotypic correlation with plant height (r = 0.784) followed by number of leaves per plant (r = 0.715). Grains yield also showed the highest positive and significant phenotypic correlation with plant height (r = 0.469) followed by total biomass (r = 0.431). Number of grain rows per cob (r = 2.662) exhibited the highest positive direct effect on grain yield per plant followed by total biomass (r = 1.993) and 100 grains weight (r = 1.194). Among the hybrids understudy, DH-8XDH-6 showed the best performance in Plant height (196.67 cm), Leaves per plant (14), total biomass per plant (440.91 g), cob length (18.169 cm), 1000 grain weight (40.47 g) and grain yield per plant (274.92 g), thus is recommended for further production and research.
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