Morfología floral y embriología de Begonia gracilis (Begoniaceae): su relevancia en la monoecia
Bibliographic record
Abstract
En este estudio se describe el desarrollo de las flores masculinas y femeninas de Begonia gracilis mediante técnicas convencionales de histología y microscopía. La finalidad fue determinar si se desarrolla sólo uno de los verticilos o las flores se inician como bisexuales y hay aborción posterior del androceo o del gineceo. Los resultados indican que la unisexualidad se establece desde el meristemo, ya que en ningún morfo floral aparecen órganos atrofi ados. Las flores femeninas desarrollan un estilo que se trifurca en el ápice, terminando en tres estigmas secos, bilobulados, papilosos y enrollados helicoidalmente. El óvulo es crasinucelado, bitégmico y anátropo, con micrópilo anfístomo. Las flores masculinas desarrollan estambres libres y sin reminiscencias de gineceo. Las tétradas de microsporas son tetraédricas e isobilaterales. El grano de polen es bicelular y tricolporado, con exina estriada y verrugada-estriada cerca de las aberturas. Por lo tanto, los resultados permiten concluir que la unisexualidad en B. gracilis se establece desde el meristemo floral, posiblemente por mutaciones en aquellos genes homeóticos que regulan el desarrollo de los verticilos sexuales.
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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 | 0.001 | 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".