From: Cypripedium subtropicum embryo development and cytokinin requirements for asymbiotic germination
DAP | developmental stage | Integument/seed coat color |
---|---|---|
30 | Megasporogenesis | White |
45 | Megagametogenesis | White |
60 | Fertilization | White |
75 | Proembryo stage | White |
90 | Early globular embryo stage | Yellowish white |
105 | Late globular embryo stage | A mixture of white and light brown seeds |
120 | Near mature seeds with degenerating suspensors | Brown |
135 | Dry and mature seeds | Brown |
150 | Capsule ripe and split | Brown |