Assessing the resistance of winter wheat to wheat spindle streak mosaic bymovirus
Bibliographic record
Abstract
Management of Wheat spindle streak mosaic virus (WSSMV), a bymovirus, relies on resistant cultivars. We compared the results from mechanical inoculation with virus-infected plant sap with those of a previous study from natural infection in field trials. The six cultivars tested (Century, Wichita, TAM 200, Geneva, Harus, and Augusta) became infected via mechanical inoculation of leaves, ruling out resistance to virus replication in leaves as the basis for resistance in the cultivars considered resistant in field trials. 'Augusta' (susceptible), 'Geneva' (resistant), and germplasm KS92WGRC22 (highly resistant) were compared in field plots for numbers of symptomatic versus asymptomatic tillers. Individual plants having both infected and uninfected tillers were found only in the two resistant wheats. Resistance in 'Geneva' and KS92WGRC22 could be due to uneven movement of virus from roots into tillers or to reduced virus replication in roots. If reduced virus replication in roots is the source of resistance in a cultivar, then cropping with such a cultivar would contribute less to the inoculum potential of soil than cropping with susceptible cultivars. Soil transmission of virus occurred in field soil gathered from the root zone of symptomatic 'Augusta', but not in field soil from the root zone of asymptomatic KS92WGRC22. These results suggest that infected plants can, in a single crop cycle, contribute significantly to the soil reservoir of WSSMV.Key words: winter wheat, Wheat spindle streak mosaic virus, WSSMV, Wheat yellow mosaic virus, WYMV, bymoviruses, soilborne viruses, resistance evaluation.
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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".