Mitochondrial DNA variation in cultivated and wild potato species (<i>Solanum</i>spp.)Contribution No. 87 from the Institute of Plant Genetics, Research Division of Portici.
Bibliographic record
Abstract
The European cultivated potato, Solanum tuberosum subsp. tuberosum, has 6 related cultivated species and more than 200 wild relatives. In Solanum spp., studies of cytoplasmic organelles have been mainly confined to the plastid DNA composition of cultivated and wild species. In this study, 53 genotypes of 30 potato species belonging to the subsections Estolonifera and Potatoe, 2 tomato species, and a black nightshade genotype were examined using PCR markers to evaluate mitochondrial DNA diversity and assess whether mtDNA variability was correlated with series classification, geographical origin, ploidy, and endosperm balance number (EBN). The markers used revealed interspecific mtDNA variability in Solanum spp. and identified 13 different haplotypes. Intraspecific variability was also observed in a few species and genomic regions. Cluster analysis allowed arrangement of the 13 haplotypes into 7 subgroups, and statistical association tests showed significant relationships between mitochondrial patterns detected by molecular analysis and ploidy, EBN, and geographical origin. On the whole, the evolutionary patterns for the genomic regions analyzed reflected the species relationships established on the basis of morphological and molecular (nuclear and plastidial DNA) data. The mtDNA variability shown is also important for better characterization of genetic resources for potato breeding.
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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 | 0.001 | 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 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".