Table 1.
Seed germination and protocorm development in D. officinale.
Stage Description
0 No germination, viable embryo
1 Enlarged embryo, production of rhizoid(s) (=germination)
2 Continued embryo enlargement, rupture of testa, further production of rhizoids
3 Appearance of protomeristem
4 Emergence of first leaf
5 Elongation of first leaf
Adapted from Stewart et al. (2003).