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Abstract

Genetic Improvement of Oil Yield in Spring Safflower Cultivars under Drought and Non-drought Stress Conditions

Improvement of oil yield in safflower is very important in breeding of this crop. For this reason, ten spring safflower cultivars were sown at drought and non-drought stress conditions in a randomized complete block design with three replications. In drought condition, correlation analysis showed positive and significant relation of 1000-seed weight, seed number plant-1, seed yield plant-1 and seed oil percent with oil yield. Results of regression and path analysis revealed that traits 1000-seed weight and seed number plant-1 are the best selection criteria for genetic improvement of oil yield in drought stress condition. In non-drought condition, traits 1000-seed weight, days to physiological maturity and seed number plant-1 were the most important oil yield components and suggest for breeding of this trait. In conclusion, selection for higher amounts of 1000-seed weight and seed number plant-1 can improve indirectly oil yield in spring safflower cultivars under both drought and non-drought conditions


Author(s): Ahmad Reza Golparvar

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