Embryo and endosperm development in coriander (<i>Coriandrum sativum</i>)
Bibliographic record
Abstract
Coriander ( Coriandrum sativum L.) seeds are rich in lipids and are potentially important sources of oils for industrial use. The objective of this study was to determine the details of embryo and endosperm development and the sites of storage reserves using microscopy and histochemistry. In coriander, the zygote divides unequally, giving rise to a large basal cell and a smaller terminal cell. Subsequent divisions in the basal cell result in the formation of a suspensor, and divisions in the terminal cell give rise to cells of the embryo proper. A defined cell lineage is absent in the formation of the proembryo. Contrary to other flowering plants, the suspensor persists as the embryo matures and storage products are present within the cytoplasm of the suspensor cells. After fertilization, the primary endosperm nucleus divides rapidly, resulting in a large syncytium of nuclei and cytoplasm. The rapid nuclear divisions occur prior to the first division of the zygote. Cellularization of the endosperm occurs soon after. Within the developing seed, the endosperm can be separated into two main regions, i.e., the “embryo surround region” (ESR) of endosperm and the persistent endosperm. The endosperm cells in these two regions have different cell fates and storage products. In the ESR, the endosperm cells undergo distinct structural changes and are destined to degenerate. These endosperm cells produce a significant amount of polysaccharides and these materials appear to aid in cell separation prior to cell degeneration. At the boundary of the ESR, the endosperm cells are partially degenerated with a large accumulation of lipids. The bulk of the endosperm cells next to the seed coat persist and they are responsible for the production and accumulation of storage lipids and proteins.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".