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The ovule sample collected on the basis of stages of flowers and embryo sacs
| Sample Division | Floral Stagea | Embryo Sac Stageb |
|---|---|---|
| Early staged ovule | Late 11 | FG1 (one nucleate) |
| Early 12 | FG2 (early two nucleate) | |
| FG3 (late two nucleate) | ||
| Mid 12 | FG4 (four nucleate) | |
| Late staged ovule | Late 12 | FG5 (eight nucleate) |
| 13 | FG6 (seven celled) | |
| FG7 (four celled) |
Floral stages are described by Bowman (1994).
Embryo sac stages are summarized from Christensen et al. (1997).
