Tocopherols (vitamin E) are lipid-soluble antioxidants, with α-tocopherol having the highest vitamin E activity. Soybean seed is a major source of tocopherols. Therefore, improving seed tocopherol content is a key breeding objective. Thirty-eight accessions from the soybean world mini-core collection were evaluated in 2019 and 2022 growing seasons. Four accessions carried a high α-tocopherol associated allele at S09₄4341929 but they did not reach the high α-tocopherol levels of cultivar KAS, likely due to cooler seed-filling conditions. Moshido Gong 502 and 503 showed low total tocopherol content in both seasons, making them promising resources for investigating genetic regulation of tocopherol biosynthesis.
Maria Stefanie Dwiyanti (Thu,) studied this question.