Correlation and regression relations between the height of plant and ear with some yield characters in maize

This study was conducted at the farm of the Faculty of Agriculture in Kharabo during 2011 2012 growing season. RCB design with two replicates was used and the correlation and regression relationship among characters were tested. Results showed that plant and ear heights were both positively correlated with some quantitative characters (number of kernels per row، number of rows per ear, 100 kernel Wight, and kernels weight per ear). Regression results also showed that the increase in plant and ear height was associated with an increase in number of rows per ear, kernels weight per ear and 100 kernel wight. It was concluded that plant height and/or ear height can be used as a direct selection index for number of rows per ear, kernels weight per ear and 100 kernel wight.