Fig. 3
From: Injection-based hairy root induction and plant regeneration techniques in Brassicaceae
Embryo rescue in A. axillaris hairy root-derived seeds. A, Seven developmental stages of seeds based on size and maturation. B1, Seeds at stage 2 contain a globular embryo. B2, Higher magnification of B1, zoomed on the embryo. C, A torpedo embryo was detected in stage 5. D, A mature embryo was observed in seeds at stage 6. E, Seeds at stages 4–5 germinated on embryo rescue medium, whereas seeds at earlier or older stages did not germinate. Scale bars represent 1 cm (A, E), 1 mm (B1, C, D), and 100 µm (B2)