Physiological Responses of Four Hedera Plants to High Temperature Tolerance
Bibliographic record
Abstract
Ivy is an important horticulture plant for three-dimensional urban greening, and heat stress is one of the important environmental factors limiting the normal growth of ivy. Studying the physiological response of ivy to high temperature stress will be of great significance for screening suitable varieties of ivy and increasing the diversity of urban three-dimensional greening landscape. Two-year cutting seedlings of four ivy varieties were cultured in an artificial climate incubator (20 ℃, 16 h light / 8 h dark) for two weeks, and then treated at 40 ℃ for 7 days. The morphological changes and physiological indexes, such as heat injury index, chlorophyll content, chlorophyll fluorescence parameters, MAD, proline content, CAT activity and SOD activity, were recorded at 0, 1, 3, 5 and 7 days. The heat resistance and heat resistance mechanism of the test materials were comprehensively evaluated through the membership function method. The results showed that the heat resistance of the four ivy species was ‘Sark’>‘Ingelise’>‘Wonder’>‘Golden Ivalace’. The chlorophyll content, maximum photochemical quantum yield (F v /F m ) and apparent quantum transfer efficiency (ETR) of the four ivy species decreased with the increase of heat stress duration. While the content of MDA continued to increase, and the increase of MDA in heat tolerant varieties was smaller than that in heat sensitive varieties. However, the proline content, CAT activity and SOD activity increased first and then decreased. The peak value of proline content in heat tolerant varieties was later than that in heat sensitive varieties, and the SOD and CAT activities in heat tolerant varieties were significantly higher than those in heat sensitive varieties ( P <0.05).
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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".