Mating system and population structure in a black spruce (Picea mariana (Mill.) B.S.P.) clonal seed orchard in Northwestern Ontario / by John W. Barrett. --
Bibliographic record
Abstract
Multi-locus enzyme systems were studied in a black \nspruce {Picea maniana (Mill.) B.S.P.) clonal seed orchard in \nnorthwestern Ontario. The embryonic and megagametophytic \ntissues of each clone were sampled and electrophoretically \nanalysed to examine the inheritance pattern of 8 polymorphic \nloci. With the exception of leucine aminopeptidase (Lap) and \naconitase (Aco), allozyme segregation followed expected 1:1 \nratios. The mating system is characterized by a moderate \nlevel of selfing (s=0.15) and a small effective population \nsize. The ratio of genetically effective males to receptive \nfemales was calculated to be 0.31. Although the parental \npopulation was in Hardy-Weinberg equilibrium, the majority of the enzyme systems examined revealed a deviation from the \nHardy-Weinberg equilibrium in the filial generation. Several \nloci exhibited heterogeneous pollen pools and there was an \nobserved excess of heterozygotes. Indications of non-random \nmating and small effective population size invalidate two \nbasic seed orchard assumptions, namely, random mating and \nlarge population size.
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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.004 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| 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".