Fig. 1

Development of the seed and corresponding silique as well as the morphogenesis of embryo during seed formation in Chinese kale. A Development of the seed and corresponding silique in Chinese kale. (a) Small flower bud (7 DBF), (b) Big flower bud (1 DBF), (c) 10 mm silique with seeds (up) and flower (down) (day 0), (d) 20 mm silique with seeds (3 DAF), (e) 35 mm silique with seeds (9 DAF), (f) 40–50 mm silique with seeds (15 DAF), (g) 55–65 mm silique with seeds (31 DAF), (h) Green silique with seeds (41 DAF), (i) Semi-brown silique with seeds (48 DAF), (j) Full brown silique with seeds (53 DAF). DAF stands for day before flower and DAF stands for day after flower. B Morphogenesis of embryo during the formation of seed in Fig. 1A. (a) Globular embryo, (b) Heart-shaped embryo, (c) Torpedo-shaped embryo, (d1) Early cotyledonary embryo and seed coat, (d2) Medium cotyledonary embryo and seed coat, (d3) Late cotyledonary embryo and seed coat. C Change of embryo diameter and seed size during seed formation. Three biological replicates were used for the measurements