Inheritance of stem solidness in eight durum wheat crosses
Bibliographic record
Abstract
Yield loss from sawfly (Cephus cinctus Norton) can be prevented by growing solid-stemmed wheat. No solid-stemmed durum cultivars (Triticum turgidumL. var. durum) are registered in Canada, even though solid-stemmed lines are available. Understanding the inheritance of stem solidness in such lines would be useful to breeders. Eight crosses were made between solid-stemmed and hollow-stemmed durums: Trinakria/DT369, Trinakria/DT367, Hugenot G/DT369, Hugenot W/DT369, 8678-1048A/Hugenot W, 8678-1048A/Hugen ot G, Kamilaroi/Hugenot G, and W9262-260D3/Kofa. Trinakria, Hugenot G, Hugenot W and W9262-260D3 are solid-stemmed and the other parents are hollow stemmed. Stem solidness was measured in field trials. The F 1 were solid-stemmed, and the F 2 of five of the seven crosses were not significantly different (P > 0.05) from a three solid-stemmed to one hollow-stemmed segregation ratio. The backcross of the solid-stemmed parents with the F 1 was 100% solid-stemmed, and the backcross of the hollow-stemmed parents with the F 1 was not significantly different (P > 0.05) from an expected one solid-stemmed to one hollow-stemmed segregation ratio. The F 1 derived doubled haploids did not differ significantly (P > 0.05) from an expected one solid-stemmed to one hollow-stemmed segregation ratio. The expression of stem solidness fit the expected segregation ratios for a single dominant gene model in most of the crosses, which suggests that stem solidness in the four durums evaluated is controlled by a single dominant gene. Key words: Inheritance, sawfly, solid-stemmed, Triticum turgidum L. var. durum
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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 | 0.001 |
| 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".