Recent progress in somatic embryogenesis of four Pinus spp.
Bibliographic record
Abstract
Advances in conifer biotechnology offer new opportunities in the field of vegetative propagation and genetic engineering. Development of clonal propagation methods, especially somatic embryogenesis (SE), has numerous potential applications. Owing to its efficiency in plant regeneration, coupled with the ease of long-term storage in liquid nitrogen, SE became an indispensable tool for accelerating the development of tree varieties and deployment. Early SE protocols were developed for Picea species, however, when applied to Pinus species, especially at the somatic embryo maturation stage, they were unsuccessful. It became apparent that pines required more research and development to bring the SE biotechnology to its potential. This review emphasizes the most recent progress made in SE and cryopreservation in the genus Pinus, focusing on major plantation and forest species in Europe (Pinus pinaster), New Zealand, Australia, and South America (P. radiata), as well as North America (P. taeda and P. strobus). Much consideration is also given to applying SE in pine improvement and deployment strategies in multivarietal forestry.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| 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".