# Tocopherol Profile Variations of Soybean World Mini-Core Collection Accessions Grown in Hokkaido

## TL;DR

This study examines tocopherol levels in soybean accessions grown in Hokkaido to identify genetic factors influencing vitamin E content.

## Contribution

The study identifies specific soybean accessions with unique tocopherol profiles for breeding and genetic research.

## Key findings

- Four accessions had a high α-tocopherol allele but did not match cultivar KAS due to cooler conditions.
- Moshido Gong 502 and 503 showed consistently low total tocopherol content.
- The study highlights genetic resources for investigating tocopherol biosynthesis.

## Abstract

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 S09_44341929 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.