Author/Authors :
Tarinejad، Alireza نويسنده Faculty of Agriculture, Department of Biotechnology, Azarbaijan Shahid Madani University , , Ghayoumi، Hamideh نويسنده MS. Student of Agronomy and Plant Breeding, Faculty of Agriculture, Islamic Azad University Tabriz Branch, Iran , , Alizadeh، Bahram نويسنده ,
Abstract :
In this study, effect of five salinity levels (0, 3, 6, 9, 12 dS/m) from Uremia lake water was studied on yield and other related traits in three spring canola genotypes canola spring genotypes (RGS003, Option500 and Option501) under greenhouse conditions. ANOVA analysis showed that salinity had significant negative effects on different traits including number of seeds and seed weight per pod, length of pod, dry matter, days to physiologic maturity and seed yield. Under different levels of salinity, seed yield showed significantly positive correlation with number of branches, number of pods per main and secondary branches, dry matter, date to physiologic maturity and oil percent. Regression and path analysis of grain yield (as dependent variable) and other traits (as independent variables) expressed that number and length of secondary pods and oil% were effective parameters on seed grain yield. Also, number of main pods had the highest positive direct effect on seed yield. Path analysis of oil% (as dependent variable) and other traits (as independent variables) expressed that number of main pods and seed weight of main and secondary pods, length of main and secondary pods, date to physiological maturity, number of branches and seed yield were effective parameters on oil percent. Mean comparison among genotypes by Duncan test at alpha=0.05 showed Option500 cultivar had the highest value of branches number, number of main and secondary pods, dry matter, seed yield and oil percent than others under different salinity conditions.
