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Record W1971467666 · doi:10.1139/x01-222

Evaluation of mating dynamics in a lodgepole pine seed orchard using chloroplast DNA markers

2002· article· en· W1971467666 on OpenAlexvenueno aff
Michael Stoehr, Craig Newton

Bibliographic record

VenueCanadian Journal of Forest Research · 2002
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicPlant and animal studies
Canadian institutionsnot available
Fundersnot available
KeywordsBiologyPinus contortaSeed orchardChloroplast DNASelfingPollenBotanyMicrosatelliteLocus (genetics)GeneticsGenomeAlleleGenePopulation

Abstract

fetched live from OpenAlex

Chloroplast DNA (cpDNA) markers were used to evaluate pollen dynamics in an operational lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) seed orchard. High levels of cpDNA differentiation were obtained using six primer pairs specific to simple sequence repeat (SSR) and variable number tandem repeat (VNTR) loci dispersed around the lodgepole pine chloroplast genome. In 69 orchard parents genotypes, 46 multilocus haplotypes were detected with 31 of these being unique (i.e., having only one orchard parent). The number of variants (alleles) per locus ranged from two to seven with gene diversity levels of 0.44-0.72. Evaluation of wind-pollinated seedlots of 15 selected clones using these markers indicated low levels of selfing (2%) and pollen contamination (5%) but showed evidence of relatively high levels of differential male reproductive success.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.006
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.199
GPT teacher head0.308
Teacher spread0.110 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations42
Published2002
Admission routes1
Has abstractyes

Explore more

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