Assessment of Relationship between Seed and Oil Yield with Agronomic Traits in Spring Safflower Cultivars under Drought Stress Condition

Identification of the important seed and oil yield components in safflower is very efficient in genetic improvement of these traits via indirect selection. For this reason, ten spring safflower cultivars were sown at drought stress condition in a randomized complete block design with three replications in the Research Field of Islamic Azad University of Khorasgan. Correlation analysis showed positive and significant relation of 1000-seed weight, No. seed/plant and oil yield with seed yield and 1000-seed weight, No. seed/plant, seed yield and seed oil percent with oil yield. Results of correlation, regression and path analysis revealed that 1000-seed weight, No. seed/plant, No. seed/capitulum and biological yield are the best selection criteria for genetic improvement of seed yield and 1000-seed weight and No. seed/plant for oil yield in drought stress condition.