Relationship between pheno-morphological traits with grain yield in promising lines of barley in Ardabil area
Subject Areas : Journal of plant ecophysiologyA. Khajavi 1 , S. Aharizad 2 , M. Ahmadizadeh 3 , H. Dalfardi 4
1 - a Department of Agronomy and Plant Breeding, Ardabil Branch, Islamic Azad University, Ardabil, Iran
2 - Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
3 - Ph.D. Student in Plant Breeding, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
4 - M.Sc. Student of Horticulture, Jiroft Branch, Islamic Azad University, Jiroft, Iran
Keywords: Correlation, Path analysis, barley, Promising lines, stepwise method,
Abstract :
In order to study the relationship between traits and to determine the direct and indirect effects of effective traits on yield, an experiment based on randomized complete block design with three replications on 20 promising line of barley was carried out in Agricultural Research Station in Ardabil, Iran. Ten agronomy traits were measured in every plot by using 20 selective plants randomly. Analysis of variance indicated that there were highly significant differences among the lines in all of the traits except in infertile tiller trait. There were significant correlation between grain yield and all the studied traits except no. day to maturity. In regression analysis, fertile tiller, number of seeds per spike and plant height remained in final model (R2 = 0.905). There was direct and positive effect on number of fertile tillers, number of seed per spike and plant height on grain yield. There was the most direct effect on number of seed per spike. The multiple statistical procedures used in this study showed that fertile tiller, number of seeds per spike and plant height were the most important yield variables. So, these traits could be used as selection criteria for increasing yield.