Condensed Tannin Accumulation during Seed Coat Development in Five Common Bean Genotypes
Bibliographic record
Abstract
ABSTRACT Condensed tannins (CT) are important determinants of the colorful seed coats characteristic of many dry bean ( Phaseolus vulgaris L.) market classes. These compounds are also important for plant development and human nutrition. Understanding the dynamics of CT accumulation during seed development and the genetic basis of this trait will contribute to the development of more nutritionally beneficial bean cultivars. Differences in patterns of CT accumulation were evaluated in the seed coats of five dry bean genotypes, which had contrasting final CT concentrations. Seed coats were assayed in developing pods taken from 6 d after flowering (DAF) onward to maturity. Condensed tannins were already present at 6 DAF in all genotypes, regardless of their final concentration. Concentrations leveled off and stabilized earlier in low CT genotypes than in those genotypes that ultimately had moderate to high concentrations. In contrast, genotypes that contained moderate to high final CT concentrations accumulated CT throughout seed coat development. Our results indicate that seed coat CT concentration in the seeds harvested during the period from 12 to 18 DAF can serve to accurately predict final CT ranking of seeds.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.000 | 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 teacher head, 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".