Pathogenicity of Pratylenchus penetrans to dwarfing apple rootstocks
Bibliographic record
Abstract
The objective of this research was to measure the effect of P. penetrans densities on the vegetative growth of three apple dwarfing rootstocks Bud 9, M.9 and M.26 under field microplot conditions. Under 500 nematodes kg -1 soil density, the shoot dry weights of Bud 9, M.9 and M.26 rootstocks were significantly reduced by 30%, 23% and 14% respectively. Under the 1 500 nematodes kg -1 soil density, the dry shoot weight of Bud 9 and M.9 were not significantly different from the 500 nematodes kg -1 soil density except M.26 which exhibited a 29% decrease. The root dry weights of rootstocks were not significantly reduced when exposed to these P. penetrans densities except M.26 which was reduced 26% relative to non-inoculated trees under the 1 500 nematodes kg -1 soil density. These results confirm the pathogenic effect of P. penetrans on dwarfing apple rootstocks. Although preliminary, these results suggest some tolerance of M.26 to P. penetrans under lower density when compared to M.9 and Bud 9. Under higher nematode densities, both Bud 9 and M.9 exhibited a tolerance of their root system in comparison to M.26. Our results also emphasize the need to further assess the susceptibility/tolerance of dwarfing apple rootstocks to various densities of P. penetrans .
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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".