Fig. 3

Scatter diagrams showing relationship between seed α-Toc contents with total tocopherol (Toc) contents and Toc ratios in RILs of the cross between TK780 and B04009. Correlations between the seed α-Toc content and the total Toc contents in 2016 (a) and in 2017 (b). Correlations between the seed α-Toc contents and the (α + γ)/δ-Toc ratios in 2016 (c) and 2017 (d). The (α + γ)/δ-Toc ratio is the ratio of the sum of α- and γ-Toc contents to the total δ-Toc content. Correlations between the seed α-Toc content and the α/γ-Toc ratios in 2016 (e) and 2017 (f). The α/γ-Toc ratio is the ratio of the α-Toc content to the γ-Toc content. **, P < 0.01; ns, non-significant.