Novel seed protection in the recently evolved invasive, California wild radish, a hybrid <i>Raphanus</i> sp. (Brassicaceae)
Bibliographic record
Abstract
UNLABELLED: • PREMISE OF THE STUDY: Interspecific hybridization may have considerable effects on plant structural defenses that can contribute to the success of invasive hybrid lineages. Changes in fruit structural and material properties are predicted to have key effects on predispersal granivory.• METHODS: Here, we asked whether plant structure can increase the fitness of a hybrid invasive relative to its progenitors. We compared fruit traits of the hybrid-derived lineage, California wild radish, with its progenitors, cultivated radish and jointed charlock.• KEY RESULTS: The hybrid lineage is significantly different from one or both ancestors in fruit length, mass, diameter, volume, shape, wall strength, and internal seed distribution. We experimentally exposed the fruits of both hybrid and wild progenitor to avian granivores and found (1) different types and degrees of damage at the different fruit sections and (2) significant differences in the inflicted damage at different sections of the fruit.• CONCLUSIONS: Combining our descriptive and experimental data, we conclude that the novel seed protection of the hybrid California wild radish is an important defense mechanism. It offers differential protection to its seeds and according to our findings, better protection of seeds that have been found to be better competitors. We suggest then that the fruit has enabled, at least in part, the successful replacement of the parental species by the hybrid lineage.
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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".