Registration of Spring Wheat Germplasm TC 67 Resistant to Fusarium Head Blight
Bibliographic record
Abstract
TC 67 red spring wheat (Triticum aestivum L.) (Reg. No. GP‐856, PI 654367) was developed at the Cereal and Oilseed Research Center, Agriculture and Agri‐Food Canada. TC 67 was derived from the cross Crocus*2/PI343447 (T. timopheevii Zhuk). A segregating population of 1500 BC1F2 plants was established and advanced to F7, using single seed descent. One hundred lines were selected from 535 BC1F7 lines, on the basis of plant fertility and agronomic traits, and evaluated for reaction to Fusarium head blight (FHB; caused by Fusarium graminearum) for two seasons. TC 67 had high levels of resistance to FHB that was comparable to that of ‘Sumai 3’, the most FHB resistant wheat available, based on point inoculation. The resistance of TC 67 to FHB was further evaluated in replicated field trials, compared with two resistant wheat lines, Sumai 3 and ‘HY 644’, in a FHB disease nursery in 2003 and 2004. The results show that TC 67 was significantly better than HY 644 in FHB incidence, severity, and Fusarium‐damaged kernels and was comparable to Sumai 3 in deoxynivalenol content in the grain.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".