The Effects of CO<sub>2</sub>Enrichment, Increased Light Irradiance, and Reduced Sucrose Concentration on Acclimatization of Micropropagated American Ginseng Plantlets
Bibliographic record
Abstract
American ginseng (Panax quinquefolius L.) plantlets produced by somatic embryogenesis were pre-acclimatized for four weeks inside growth chambers in a factorial design. The three factors of the experiment were CO2 concentration (400 and 3000 μL L−1), photosynthetic photon flux (30 and 50 μmol m−2 s−1) and sucrose concentration (0 and 15 g L−1) in the culture medium. The plantlets were subsequently transferred into a greenhouse where they were acclimatized for two weeks. Regardless of photosynthetic photon flux and sucrose levels, CO2 enrichment during the pre-acclimatization phase significantly increased (6.3%) the fresh mass of American ginseng plantlets in the growth chambers. This positive effect resulted in a 26.4% increase in fresh mass after the acclimatization phase in the greenhouse. CO2 enrichment during the pre-acclimatization phase also significantly increased (32%) leaf area after acclimatization, but had no significant effect on dry mass, height nor survival. Increased light irradiance and reduced sucrose concentration had no significant effects on the growth parameters and survival of American ginseng plantlets. Despite the biological and ecological constraints that limit growth and development of this species, CO2 enrichment could enhance its acclimatization.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 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 | 0.001 |
| 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 source (direct Gemma or distilled Codex), 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".