Fig. 1

Different levels of PA (B–D) and PI (F–H) in diploid embryos derived from ZD958×CAU5. A and E show immature haploid control embryos. B–D PA grading according to the percentage of pigmented area on the scutellum. B level-1, 0–25%; C level-2, 25–50%; D level-3, 50–100%. F–H PI grading according to the degree of pigmentation of the scutellum. F level-1, pink; G level-2, red; H level-3, purple. Scale bars, 1 mm (A–H)