Paper Details

Correlation and path coefficient analyses of forage yield in corn hybrids as second crop

Vida Ahmadi, Somaye Eslami Fard, Zahra Rabieyan

DOI: https://dx.doi.org/10.12692/ijb/4.4.170-175

Int. J. Biosci. 4(4), 170-175. February, 2014. (PDF)

Abstract:

In order to study correlation between traits and forage yield components of corn hybrids and to determine the most effective factors on forage yield, an experiment was carried out at the agricultural research farm of Khosroshahr jahad Keshavarzi Center (Tabriz, Iran) in 2012. The experiment was conducted as a Randomized Completely Block Design with four replications. The correlation coefficient of forage yield with stem diameter, ear weight, and kernel number per row, ear length, days to silk emergence and days to physiological maturity was positive and significant. In the regression analysis, stem diameter, ear weight, and plant height remained in the final model of regression analysis and were considered as the effective components on the forage yield. Path analysis revealed that ear weight could be used as a selection criterion because of its highly positive direct effects on forage yield. Stem diameter and plant height could also be considered for selection in forage corn breeding.