Phylogenetic analysis of <i>Carthamus</i> species based on the nucleotide sequence of the nuclear SACPD gene and chloroplast <i>trn</i>L–<i>trn</i>F IGS region
Why this work is in the frame
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Bibliographic record
Abstract
To clarify the phylogenetic relationships of Carthamus species, we performed sequence analysis of the nuclear stearoyl acyl carrier protein desaturase (SACPD) gene and the chloroplast intergenic spacer region between leucine and phenylalanine tRNA genes (trnL-trnF IGS) in 13 taxa of Carthamus. The previous division of the genus into 4 taxonomic sections and allocation of particular genomes to various taxa on the basis of morphological, cytogenetic, and biosystematic analyses is not supported by the present study. Our results provide evidence of the occurrence of 5 nuclear genomes (A, B, C, X, and Y) and 3 cytoplasm types (A, B, and C) in the genus Carthamus. The cultivated safflower, C. tinctorius (2n = 24), has the B genome and type B cytoplasm. Both of these are not present in the polyploid taxa. This contradicts the earlier view that one of the genomes involved in the origin of the polyploid taxa of Carthamus is the B genome. Comparison with an outgroup species (Cirsium japonicum) indicated that C. arborescens is the most primitive species in the genus. Carthamus palaestinus is genetically closest to the cultivated safflower.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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