Study on Verticillium longisporum of canola from the first reported farm in North America
Bibliographic record
Abstract
Verticillium longisporum (Stark) Karapapa et al. 1997, is a soil-borne pathogen of the Brassicaceae family and causes Verticillium stripe of canola. Verticillium longisporum occurs in three distinct hybrid types that differ in pathogenicity and virulence. In North America, V. longisporum is only observed on cabbage, cauliflower and horseradish. This changed dramatically, when in 2014 for the first time, canola infected with V. longisporum was detected at a research farm in Manitoba, Canada. The pathogen concentration, its distribution and the hybrid type at the farm were unknown. Therefore, in 2016, 194 soil samples from the farm were analyzed using real-time PCR analysis to determine pathogen concentration per gram of dry soil. Of the 194 soil samples, the real-time assay reported 39% samples positive for the pathogen. This study also added information on the pathogen hybrid lineage that was determined to be the most aggressive type on canola.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.002 | 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) | 0.001 | 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".