Fig. 4

Characteristics of sesame plant height and seed coat color. a Correlations between sesame plant height and related traits across three trial sites. PH, plant height; CZL, capsule zone length; HFC, height of the first capsule-bearing node; IL, internode length; NN, node number; TL, tip length without the capsule; WC, Wuchang field trial location; PY, Pingyu field trial location; YL, Yangluo field trial location. The size and color of the ovals mirrored the correlation coefficient given in the lower triangle or ovals. b Variation in seed coat color in the RIL population. Subpanels 1 and 6 represent the seeds of the parental lines Zhongzhi No. 13 and ZZM2748, and the other panels represent the separation of the seed coat color in the population