Photosynthetic Light Response Curves for 28 Wild Sunflower Species

Rebekah Davis from Borealis Harvested Dataverse published a dataset on April 25, 2026, containing photosynthetic light response curve data. It includes gas exchange measurements for a single accession of each of 28 diverse wild sunflower species (genus Helianthus) grown under controlled greenhouse conditions. Data was collected using a TARGAS-1 portable photosynthesis system across nine light levels.

Use Cases

• Modeling the evolution of photosynthetic function as a function-valued trait based on light curve data.
• Conducting meta-analysis on plant photosynthetic adaptation using the provided light response parameters.
• Comparing stomatal conductance and intercellular CO2 concentration across diverse sunflower species.
• Assessing methodological pitfalls in phylogenetic modeling of continuous trait data.

Strengths

• Data covers 28 diverse wild sunflower species, providing phylogenetic breadth.
• Includes both directly measured and calculated physiological variables at nine standardized light levels.
• Instrumentation and data collection method (TARGAS-1 system) are explicitly stated.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes 3% of data points have partially missing values, and four species required measurement adjustments.

Provenance

Source

Borealis Harvested Dataverse

Collection Method

Gas exchange data collected using a TARGAS-1 portable photosynthesis system under controlled greenhouse conditions.

Time Range

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Freshness

Last updated 2026-04-25 04:13:09; freshness should be verified.

Geography

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