Analysis of Stem Rust Resistance in Australian Barley Cultivars
Bibliographic record
Abstract
Eighty-two Australian and five exotic barley cultivars were evaluated at the seedling stage for resistance to the Australian stem rust pathotype 98-1,2,3,5,6. Although most of these cultivars exhibited mesothetic (mixed infection type) reactions that were associated with a high level of chlorosis, two ('O'Connor' and 'Pacific Ranger') were highly resistant. Marker analysis indicated that four Australian cultivars ('Empress', 'Vlamingh', Pacific Ranger, and 'Yerong') possess the stem rust resistance gene Rpg1. Tests conducted using North American Puccinia graminis f. sp. tritici pathotypes MCCJ and QCCJ supported marker results and indicated that 'Pacific Ranger' and 'Vlamingh' likely carry additional stem rust resistance genes. Based on pedigree information and results from multipathotype tests, these genes are believed to be uncharacterized and, therefore, new. The resistance in Australian barley 'Franklin' conferred resistance against all pathotypes tested in this study. Studies of inheritance to MCCJ revealed that it possessed an unknown seedling resistance, which was independent of and displayed additivity to Rpg1.
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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".