Hydrogen Sulfide Inhibits Flowering but Hastens New Leaf Growth in Bok Choy (Chinese Cabbage)
Bibliographic record
Abstract
Hydrogen sulfide (H2S) is a colorless, toxic, and flammable gas with the smell of rotten eggs. High concentrations of H2S are toxic, but a very small amount of H2S can help plants and our bodies in many ways. The unexpected flowering (bolting) of leafy greens inhibits leaf growth and reduces the leaf quality, and the effect of H2S on plant bolting is still unknown. Here we investigated the effects of H2S on flowering and leaf growth by using the hearts of bok choy (Brassica rapa subsp. Chinensis), a type of Chinese cabbage. Incubation of bok choy hearts for 16 days in a solution of sodium hydrosulfide (NaHS), a H2S donor, significantly repressed bok choy flowering and shortened flower stems. In contrast, the flowering of bok choy in the tap water and sodium chloride (NaCl) groups was normal, with longer flower stems and many flowers. NaHS had no effect on the growth of leaf stems or on leaf chlorophyll contents. In addition, NaHS significantly reduced pollen viability but induced the growth of new leaves from the bottom part of bok choy hearts, in comparison with the two control groups, tap water and NaCl. These observations indicate that H2S inhibits flowering but hastens new leaf growth in bok choy. Not only can this discovery help grow green vegetables, but it can also potentially help control weeds.
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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 | 0.001 |
| 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".