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Botanical Studies

Table 1 Major microscopic structural events in the developing fruits of G. elata and G. nantoensis

From: Embryology of two mycoheterotrophic orchid species, Gastrodia elata and Gastrodia nantoensis: ovule and embryo development

Developmental stage

Days after pollination

G. elata

G. nantoensis

Archesporial cell and megasporocyte

0

0

Megasporogenesis and megagametogenesis

2

2–4

Mature embryo sac

4

6

Fertilization and zygote

6

8

Proembryo

8

12

Globular embryo

10

14–16

Late globular embryo

12–14

18

Mature seed

16

20

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