Pathogenicity of Bursaphelenchus xylophilus Isolates to Pinus thunbergii and P. massoniana and Incubation of the Nematode
Bibliographic record
Abstract
The objective of this study was to determine the pathogenicity of Bursapelenchus xylophilus isolates from China, Japan and Canada to 4-year black pine (Pinus thunbergii) and masson pine (Pinus massoniana) seedling. The results showed that their pathogenicity diferentiated distinctly. The mortality of black pine ranged from 0 to 87.5%, and the RHS index ranged from 0 to 110. The pathogenicity of Chinese nematode populations was greater than that of Japan and Canada. The pathogenicity of BxCN3, BxCSC and BxCZD was stronger, with mortality 87.5% and the RHS index exceeding 90. In the 6 isolates whose dead rates were 87.5%, the population of BxCN3 from Nanjing had the shortest death time, 38 days. In all of the tested populatios, the dead process of population BxCZD from Zhejiang was shortest, 14 days in black pine. The results of detrermination in P. massoniana indicated that 4-year seedlings resisted P. xylophilus, with only two seedlings died in this experiment. In this study, incubating carrier with non-symptom was found in P. thunbergii seedlings inoculated with pine wood nematode. It is important for incubaton of nematodes of the spread of the nematode.
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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 | 0.000 | 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) | 0.000 | 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".