Nutrients alleviate the deleterious effect of salinity on germination and early seedling growth of the psammophytic grass <i>Elymus farctus</i>
Bibliographic record
Abstract
Elymus farctus L. is a perennial grass, dominating the Mediterranean coastal sands of Egypt. Germination of E. farctus seeds was monitored under the impact of NaCl levels up to 300 mmol·L −1 , either in water or in nutrient solution containing nitrogen in the form of ammonium, nitrate, or ammonium nitrate. Seed germination was more salt tolerant than extension of embryonic axis, and radicle elongation was more salt tolerant than plumule elongation. NaCl applied in water sharply reduced germinability beyond a threshold of 55 mmol·L −1 , but progressively inhibited embryonic axis elongation. Presence of nutrients alleviated the effect of salinity, particularly if nitrogen was in the form of nitrate. The effect of salinity on speed, uniformity, and synchrony of germination was in general modulated by the presence of nutrients. Salt-treated seeds readily recovered from stress when moved to distilled water, without a lag period, and with high speed, uniformity, and synchrony of germination but with a lower recovery percentage compared with the germination of fresh seeds in distilled water, which might point to a combination of osmotic and specific ion effects of salinity on seed germination.
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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".