Response of <i>Capsicum</i> genotypes to the root-knot nematode <i>Meloidogyne enterolobii</i>
Bibliographic record
Abstract
Meloidogyne enterolobii is a highly aggressive root-knot nematode (RKN) that causes substantial economic losses to Capsicum species and other crops. Resistant genotypes have been used as an alternative to chemical nematicides; however, available Capsicum cultivars are susceptible to this nematode. Hence, the objective of this study was to screen a Brazilian Capsicum germplasm collection, comprising germplasm from Embrapa and commercial cultivars to M. enterolobii, under greenhouse conditions. The treatments comprised 39 C. chinense, 22 C. annuum, and 2 tomato (Solanum lycopersicum) cultivars (checks). Individual plants were inoculated with 5,000 M. enterolobii eggs and second-stage juveniles (J2), and evaluations were carried out for the gall index, egg mass index, number of eggs per gram of roots, reproduction factor (RF), and reproduction index (RI) at 65 days post-inoculation. The results demonstrated that all plant genotypes exhibited susceptibility to this nematode. However, some genotypes exhibited a lower RF (0.01–4.9) than the tomato ‘Nemadoro’ (RF = 8.4–15.3), thus being classified as low susceptibility according to the RI concept. These findings are important for ongoing efforts to identify novel sources of resistance to RKN and contribute to safer, more sustainable agricultural practices.
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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 | 0.000 | 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".