Genetic variation in arctic populations of timothy (Phleum pratense L.): II. Phenotypic stability of seed production
Bibliographic record
Abstract
Rognli, O.A. 1987. Genetic variation in arctic populations of timothy (Phleum pratense L.). II. Phenotypic stability of seed production. —Hereditas 207: 75–94. Lund, Sweden. ISSN 0018–0661. Received November 10, 1986 The present paper is concerned with phenotypic stability of seed production of four North Norwegian timothy populations. In clonal experiments conducted at 69°N. 63.S°N, and 60°N latitude in Norway. the genotype × location interaction was the most important interaction effect. Individual genotypic stability reactions were studied by ecovalence (or stability variance), and mean rank difference. Pattern analysis was used to investigate the form of the individual genotypic reactions. Large differences in stability were found among genotypes. Only 11.5% of the genotypes contributed significantly to the interaction sum of squares. Elimination of very unstable genotypes could therefore be a strategy of population improvement. rather than selecting stable genotypes. Correlation between ecovalence and mean rank difference depended upon the yield level, being low for high yielding genotypes. Ecovalence and average seed yield were positively correlated, but high yielding and stable genotypes could be found. Stability rankings were sufficiently consistent over years to justify a single year test of stability. Pattern analysis (FASTCLUS) was performed on the individual genotypic within-location residuals. Structure of cluster groups revealed specific genotypic and population adaptations, assessed according to the ecovalence concept. Canonical discriminant analysis (CANDISC) was used to aid visual interpretation of group differences.
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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 | 0.000 | 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 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".