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 geneticimprovement of these traits via indirect selection. For this reason, ten spring safflower cultivars weresown at drought stress condition in a randomized complete block design with three replications in theResearch Field of Islamic Azad University of Khorasgan. Correlation analysis showed positive andsignificant relation of 1000-seed weight, No. seed/plant and oil yield with seed yield and 1000-seedweight, No. seed/plant, seed yield and seed oil percent with oil yield. Results of correlation, regressionand path analysis revealed that 1000-seed weight, No. seed/plant, No. seed/capitulum and biologicalyield are the best selection criteria for genetic improvement of seed yield and 1000-seed weight andNo. seed/plant for oil yield in drought stress condition.

کلیدواژه ها:

Spring safflower ، Selection criteria ، Genetic Improvement ، Correlation Analysis ، Step-Wise Regression ، Path Analysis