Genetic analysis of blackleg and white rust resistance in Brassica rapa
Bibliographic record
Abstract
The first objective of this study was to determine the inheritance of resistance to blackleg caused by 'Leptosphaeria maculans' in ' Brassica rapa'. Intraspecific crosses were performed between four blackleg resistant populations and a blackleg susceptible population. Inheritance of resistance to the disease was determined by production of homozygous doubled haploid lines, from heterozygous blackleg resistant F1 generations, using microspore culture and self-pollination to determine the doubled haploid line segregation of the population at the cotyledon and adult plant stages. The second objective of this study was to determine the inheritance of resistance to 'Albugo candida' in 'B. rapa'. Intraspecific crosses were performed between a pure-breeding white rust resistant population to four pure-breeding white rust susceptible populations. Inheritance of resistance to the disease was determined by production of homozygous doubled haploid lines, from heterozygous white rust resistant F1 generations, using microspore culture and self-pollination to determine the doubled haploid line segregation of the population at the cotyledon stage. (Abstract shortened by UMI.)
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.001 | 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 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".