Development of molecular markers and linkage maps for the <i>Carthamus</i> species <i>C. tinctorius</i> and <i>C. oxyacanthus</i>
Why this work is in the frame
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Bibliographic record
Abstract
A set of SSR and RFLP markers for safflower (Carthamus tinctorius) and jeweled distaff thistle (C. oxyacanthus) was generated from cDNA and genomic libraries and by mining public and proprietary sequence databases. In total, 1412 PCR-based markers and 75 RFLP markers were screened and polymorphic loci were mapped in an intraspecific F2 population of C. tinctorius and an interspecific BC1 population of C. tinctorius x C. oxyacanthus. The two populations shared one common parent and the resulting linkage maps could be compared for synteny. The level of polymorphism was low in both populations and only 8.2% and 13.7% of the analyzed markers could be mapped in the intraspecific and interspecific maps, respectively. The two maps showed significant colinearity of markers in several regions and an apparent translocation or inversion event on one linkage group. Noticeable segregation distortion was found on one linkage group of the C. tinctorius map and dense clustering of loci occurred on several linkage groups of the C. oxyacanthus map. The two maps represent the first major linkage analysis of Carthamus species. The molecular tools will be useful for a variety of genetic and genomic applications in safflower and its related species and have been used in our laboratory to map a flower color gene in C. tinctorius.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 it