Genetic Control of Interspecific‐Derived and Juvenile Resistance in Lentil to <i>Colletotrichum truncatum</i>
Bibliographic record
Abstract
ABSTRACT Anthracnose, caused by Colletotrichum truncatum (Ct), is a major disease of lentil (Lens culinaris ssp. culinaris Medik.; Lcc) on the Canadian prairies. Resistance to the more virulent race Ct0 of the pathogen is extremely rare within the Lcc gene pool; partial resistance to race Ct0 in Lcc breaks down as the plant progresses through the adult phase (AP). Resistance was introgressed from Lens ervoides (Le) and the F1 and F2 generations of two introgression populations assessed for resistance when inoculated separately with both races of Ct. One population was tested with race Ct0 at both the juvenile phase (JP) and AP. F2:3 families were also tested for race Ct0 resistance. Resistance from Le to both races of Ct appears to be due to the same gene(s) or tightly linked genes. Different models for genetic control of resistance between populations are observed depending on whether the interspecific line is crossed into a susceptible or partially resistant Lcc background; however, duplicate recessive epistasis seems to control susceptibility in the susceptible background and when juvenile resistance is not a factor. Significant differences between phases were evident for more than a third of the F2s tested, supporting different resistance gene action based on growth phase; resistance in the JP seemed to be due to dominant and recessive epistasis. Results suggest genetic control of juvenile resistance in combination with interspecific‐derived resistance is complex.
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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".