Physiologic variation in<i>Mycosphaerella graminicola</i>from western Canada
Bibliographic record
Abstract
Mycosphaerella graminicola (anamorph: Septoria tritici), the causal agent of septoria leaf blotch of wheat, has increased in prevalence in the prairie region of Canada in recent years. It is important to know if variation in virulence occurs in the local population as was reported in other countries. Seventy-four pathogen isolates were collected from hexaploid wheat fields in Manitoba and Saskatchewan and tested for virulence on a set of differential genotypes, including four hexaploid and two tetraploid wheat genotypes. Seedlings were inoculated with a conidial suspension and assessed 14 and 21 days later for the presence of necrosis, chlorosis, and pycnidia to identify virulence patterns. Reactions of the differential host genotypes to different isolates ranged from susceptible to near-immune. Adult-plant reactions were similar to seedling reactions for all genotypes used in this study. A difference in virulence patterns on one genotype suggested that physiological specialization occurs and that two virulence groups are present in the pathogen population from western Canada, based on the set of wheat genotypes used in this study
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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 | 0.001 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".