A 2026 study by Xiaoyan Luo systematically evaluated heat tolerance in 36 Oncidium orchid cultivars. The research identified 8 highly heat-tolerant cultivars and determined 40.00°C as the optimal screening temperature. It confirmed relative electrolyte conductivity, proline content, and peroxidase activity as core physiological biomarkers.
Use Cases
- Screen and rank orchid cultivars for heat tolerance based on physiological biomarker thresholds.
- Validate breeding strategies using identified primary determinants of heat adaptation (membrane stability and osmotic adjustment).
- Re-evaluate conventional stress tolerance models based on findings regarding proline accumulation as a passive response.
- Select parental lines for breeding programs from the 8 identified heat-tolerant cultivars.
Strengths
- Identifies 8 highly heat-tolerant cultivars from a pool of 36 tested materials.
- Establishes a specific discriminative temperature threshold of 40.00°C for screening.
- Confirms three core physiological biomarkers with coefficients of variation exceeding 50.00%.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- The dataset is small (21.5 KB), indicating limited scope.
Provenance
- Source
- figshare
- Collection Method
- Combined natural field heatwave screening, controlled environment validation, and physiological mechanism dissection under graded temperature stress.
- Freshness
- Last updated 2026-05-22 04:28:02; freshness should be verified.