Total Tocopherol Content in the Seeds of Sunflower Variety Populations

The article presents the results of the study of the total tocopherol content (TTC) in the seeds of eight oil and confectionery variety populations bred at V.S. Pustovoit All-Russian Research Institute of Oil Crops in 2016–2018. The variability of TTC in the varieties amounted to 415–533 mg/kg on the average for three years. It was found that the TTC trait depends more on the genotype of the variety, but environmental conditions can also have a significant effect. A reliable negative correlation was found between the amount of tocopherols and thousand-seed weight and seed huskness, and a positive correlation with oil content and seed weight. It was found that the varieties with high oil content Skormas, Umnik, and Platonych had a consistently high level of tocopherols in all three years of testing.