The performance of dry bean cultivars with and without common bacterial blight resistance in field studies across Canada
Bibliographic record
Abstract
Common bacterial blight (CBB) is a serious seed-borne disease in dry beans (Phaseolus vulgaris). Plant breeders have focused on genetic resistance to control this disease, and this led to the release of the first resistant cultivar (OAC Rex) in 2002. In 2003 and 2004, field studies were conducted at six sites across Canada to measure the impact of CBB resistance on dry bean seed yield. Two resistant and four susceptible cultivars were evaluated in noninoculated and inoculated experiments at each site. In the noninoculated experiments, the CBB incidence was very low and there were no treatment differences for measurements of leaf disease. Significant disease pressure occurred in the inoculated experiments at 7 of 12 site-years. Both resistant cultivars usually had less leaf disease than the susceptible cultivars. Yield comparisons between the inoculated and noninoculated experiments were conducted using a yield index calculation to estimate the impact of CBB on the yield of the cultivar. OAC Rex and HR67 had a mean yield advantage of 23.1 and 13.8%, respectively, compared with the mean of the four susceptible cultivars. This is similar to the yield advantage previously reported in the literature. Key words: Dry bean, Phaseolus vulgaris, Xanthomonas axonopodis pv. phaseoli, resistance, yield
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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 | 0.000 |
| Science and technology studies | 0.001 | 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".