Registration of Six Wheat‐Rye Addition Lines Resistant to the Russian Wheat Aphid
Bibliographic record
Abstract
Six wheat‐rye ( Triticum aestivum L.– Secale cereale L.) addition line genetic stocks—CO03752 (Reg. No. GS‐164, PI 659317); CO03754 (Reg. No. GS‐165, PI 659318); CO03758 (Reg. No. GS‐166, PI 659319); CO03761 (Reg. No. GS‐167, PI 659320); CO03764 (Reg. No. GS‐168, PI 659321); and CO03765 (Reg. No. GS‐169, PI 659322)—having resistance to biotypes 1 and 2 of Russian wheat aphid [RWA; Diuraphis noxia (Kurdjumov)] were developed by Colorado State University in collaboration with Laurentian University (Canada). The PI 386148 triticale (× Triticosecale Wittmack) from Russia is among the most resistant lines to the RWA biotypes 1 and 2. This triticale line was used as the male parent in crosses with the hard red winter wheat ( Triticum aestivum L.) cultivar ‘Lamar’ (PI 559719). The lines were derived following five backcross generations using standard greenhouse seedling screening for RWA biotype 1 resistance and three subsequent selfing generations with seedling screening for RWA biotype 2 resistance. Seed of the lines was increased for agronomic and other evaluations. Four lines (CO03752, CO03758, CO03761, and CO03765) are cytologically stable and carry a pair of rye ( Secale strictum C. Presl) chromosomes as disomic additions of 1R. One line (CO03764) has 42 wheat chromosomes and 2 heteromorphic rye chromosomes, and one line (CO03754) is unstable and shows a moderate level of mixoploidy with monosomic additions of 1R. Under nonirrigated production conditions, the grain yield and grain volume weight of three of the lines were similar to those of some adapted released wheat varieties.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
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".