Bibliographic record
Abstract
The pachytene chromosomes of two groups of perennial Medicago species, not usually considered to be related to M. sativa, were analysed. M. daghestanica Ruprecht., M. pironae De Visiani, and their sterile hybrid had similar idiograms, and the two species are probably closely related. The hybrid sterility has causes other than gross chromosomal differences. The idiograms differed from those of the M. sativa-falcata-glutinosa complex only in proportional lengths of chromosomes, hence the two groups may share a common ancestor. M. rhodopea Velen, and M. rhodopea X M. rupestris M. B. had almost identical idiograms, leading to the conclusion that M. rhodopea and M. rupestris are closely related. The idiogram of M. rhodopea was very similar to that of M. sativa, and in a triploid hybrid between diploid M. sativa and autotetraploid M. rhodopea, trivalent pairing was observed, confirming some homology between chromosomes of the two species. The M. sativa group and M. rhodopea group may have diverged only relatively recently. In pachytene cells of M. rhodopea and two of the M. rhodopea X M. rupestris hybrids, a large darkly staining body was observed in the nucleoplasm. This was shown by pyronine/methyl green staining to contain RNA, and in behaviour resembled an accessory nucleolus.
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 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) | 0.001 | 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 teacher head, 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".