Expression of resistance to stripe rust, powdery mildew and the wheat curl mite in <i>Triticum aestivum</i> × <i>Haynaldia villosalines</i>
Bibliographic record
Abstract
Stripe rust, powdery mildew and the wheat curl mite (Aceria tosichella) (WCM) are common problems in wheat throughout the world. The expression of resistance to these diseases and the mite was investigated in wheat ×Haynaldia villosa chromosome addition, substitution and translocation lines. Progeny tests and cytogenetic examinations were carried out on crosses of the 6VS translocation line with susceptible genotypes of wheat to study the inheritance of the stripe rust, powdery mildew and WCM resistance. These studies also were used to elucidate if the resistance was associated with the H. villosa 6V chromosome. The test results confirmed the presence of a high level of resistance to stripe rust in wheat × H. villosa 6V addition and 6VS translocation lines. However, progeny tests and genomic in situ hybridization (GISH) analysis showed that the stripe rust resistance gene, Yr26 was not associated with the H. villosa chromosome arm 6VS. While WCM and powdery mildew resistance were always associated with the presence of the 6VS chromosome arm in the F2 and F3 populations. The study also showed that most wheat × H. villosa addition or substitution lines were heterogenous in their reaction to stripe rust. The possible reasons for the heterogeneous response to stripe rust in wheat lines carrying the H. villosa chromosomes 2V, 3V and 4V are discussed. Key words: Haynaldia villosa, Puccinia striformis, Aceria tosichella, stripe rust, expression of resistance, addition lines, substitution lines, 6VS-translocation
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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 | 0.000 | 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 | 0.001 |
| 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".