Phylogenetic analysis of the genus<i>Avena</i>based on chloroplast intergenic spacer<i>psb</i>A–<i>trn</i>H and single-copy nuclear gene<i>Acc1</i>
Bibliographic record
Abstract
Two uncorrelated nucleotide sequences, chloroplast intergenic spacer psbA-trnH and acetyl CoA carboxylase gene (Acc1), were used to perform phylogenetic analyses in 75 accessions of the genus Avena, representing 13 diploids, seven tetraploid, and four hexaploids by maximum parsimony and Bayesian inference. Phylogenic analyses based on the chloroplast intergenic spacer psbA-trnH confirmed that the A genome diploid might be the maternal donor of species of the genus Avena. Two haplotypes of the Acc1 gene region were obtained from the AB genome tetraploids, indicating an allopolyploid origin for the tetraploid species. Among the AB genome species, both gene trees revealed differences between Avena agadiriana and the other species, suggesting that an AS genome diploid might be the A genome donor and the other genome diploid donor might be the Ac genome diploid Avena canariensis or the Ad genome diploid Avena damascena. Three haplotypes of the Acc1 gene have been detected among the ACD genome hexaploid species. The haplotype that seems to represent the D genome clustered with the tetraploid species Avena murphyi and Avena maroccana, which supported the CD genomic designation instead of AC for A. murphyi and A. maroccana.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Science and technology studies | 0.001 | 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".