The Simple Correlation and Path Coefficient Analysis for Yield and Some Yield Components of Durum Wheat in Two Seasons in Iraqi Kurdistan.

Volume 18 , Issue 2 , February 2016 , Pages 223-332

Authors

¹ University of Sulaimani - Faculty of Agricultural Sciences – Sulaimani – Iraqi Kurdistan Region

This investigation was conducted during the winter seasons of 2012-2013 and 2013-2014

at Qlyasan Agriculture Research Station, Faculty of Agricultural sciences, University of

Sulaimani, using split plot design the main plots conducted in Randomized Completely

Block Design (RCBD) with three replicates to study the effect of organic matter and

removal treatments on the yield of durum wheat Ovanto cultivars. Highly significant and

positive correlations recorded between grain yield & spike weight, grain weight/spike

and harvest index at the first season. At the second season highly significant and positive

correlation were recorded between grain yield and spike weight and harvest index and

significant and positive correlation with spike length and biological yield at the second

season. Concerning the path coefficient analysis, grain yield represented the dependent

variable and no. of spikes/m2, spike weight/m2, average spike length, no. of

spikelets/spike, no. of grains/spike, grains weight/spike,1000-grain weight, biological

yield (t/ha) , harvest index and grain yield (t/ha), were the independent ones. Maximum

and positive direct effect in grain yield recorded by grain weight/spike at the first season

and harvest index at the second season reaching 0.639 and 0.822 respectively.

Statistics