Organization And Introgression Mechanics Of Phaseolus Vulgaris (Common Bean)
Bibliographic record
Abstract
Phaseolus vulgaris is a major food crop grown and consumed around the world. A new world vegetable, the common bean underwent two separate domestication events, both pre-Columbus. These events generated two different land races, the Mesoamerican and Andean, named for the area where the domestication took place. Since the initial domestications the land races have been generally evenly cultivated, but despite its popularity the common bean has only very recently been fully sequenced. One of the issues faced by bean growers worldwide is Common Bacterial Blight (CBB). A disease caused by Xanthomonas axonopodis, CBB causes crop loses ranging from 20–40% every year but does not affect all species within Phaseolus evenly; P. acutifolius, for example, shows an innate resistance to CBB. To leverage this advantage, researchers at the University of Guelph, in partnership with the Ontario Agricultural College, developed a cultivar of Mesoamerican P. vulgaris that was introgressed with PI440795, a P. acutifolius accession, and backcrossed repeatedly with several other Mesoamerican P. vulgaris accessions to generate ‘OAC-Rex’, a plant that displays the crop-desired traits of P. vulgaris and the disease resistance traits of P. acutifolius. Genetic introgression is the process of crossing distantly related organisms followed by repeated backcrossing, resulting in a viable offspring that displays characteristics of each parent. Though rarely occurring, it can be observed in both plants and animals and is often exploited in a crop development context to generate new cultivars. Unfortunately, though regularly observed, introgression has been followed on a predominantly phenotypic level, usually many generations after the event, and as such molecular aspects of this phenomenon are largely unknown.By studying OAC-Rex, PI440795, and G-19833 (an Andean cultivar whose whole-genome has been published) introgression was examined directly and a method for the detection of regions within the introgressed genome uniquely donated from either parent
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".