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Different periods of the different materials. (A–D): cotyledon stage of ‘2217-Pur’, ‘2217-Gre’, ‘B90830’ and ‘2116’; (E–H): seedling stage of ‘2217-Pur’, ‘2217-Gre’, ‘B90830’ and ‘2116’; (I–L): large-leaf stage of ‘2217-Pur’, ‘2217-Gre’, ‘B90830’ and ‘2116’. The scale bar is 3 cm (A–D) and 5 cm (E–L).
