Growth disorders and phenotype variability in phytotron-cultivated barley
Bibliographic record
Abstract
In continuation of previous studies, four barley varieties were included in an experiment to test the influence of photo- and thermoperiod on plant development and phenotypic variability. Using the short photoperiod of 12 hours, anomalies of development were especially frequent in Ingrid and Kristina barley and the line 8004-37 of Rupal barley. Photoperiods of 24 and 16 hours gave but few major disturbances. All varieties had a higher number of nodes and internodes in short-day than in long-day cultivation. The growth disorders appeared in the upper part of the stem at the transition zone of the vegetative and generative system. False flag-leaves were common. Basal rachis internodes frequently became greatly elongated. Secondary shoots were formed from the last stem node, from ordinary and extra collars as well as rachis nodes, including also the origin of secondary spikes. The disorders were less severe in Bonus and Rupal barley 8004-1. The anomalies implied the end stage of a gradually increasing level of variability with an ultimate developmental disorganization, generally not found at optimal conditions but common in short photoperiods. “Phenetics”, a concept applied by Mayr, illustrates and explains the dynamic pattern of genotype reactions to changing environments.
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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".