Gas Exchange and Hyperspectral Data for 240 Indica Rice Genotypes Under High CO2

In 2022, a population of 240 indica rice genotypes from the PRAY panel was cultivated in CIRAD's Abiophen growth chambers under elevated CO2 (700 µmol mol-1). Measurements of leaf gas exchange and hyperspectral data were taken during the grain-filling phase using LI-6800 Portable Photosynthesis Systems. The dataset was created by Denis Cornet of CIRAD to study correlations between spectral data, leaf sugar concentration, and photosynthetic traits for predicting CO2 acclimation.

Use Cases

• Modeling the relationship between hyperspectral reflectance and leaf photosynthetic traits mentioned in the description.
• Analyzing genetic variation in gas exchange responses to elevated CO2 across the 240-genotype panel.
• Predicting rice acclimation to high CO2 conditions based on leaf sugar concentration and spectral data correlations.
• Calibrating non-destructive spectral measurements against direct gas exchange measurements for high-throughput phenotyping.

Strengths

• Data collected from 240 individual rice genotypes, representing genetic diversity within the Indica species.
• Measurements were standardized, taken during a specific physiological stage (grain-filling) and time of day (6-9 hours after dawn).
• Used two calibrated LI-6800 Portable Photosynthesis Systems with fluorometers for consistent gas exchange data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a single year (2022) and controlled environment, which may limit generalizability to field conditions.

Provenance

Source

CIRAD Harvested Collection, author Denis Cornet.

Collection Method

Data gathered using LI-6800 Portable Photosynthesis Systems on flag leaves of rice plants in controlled growth chambers.

Time Range

2022, with measurements taken 15 days after heading.

Freshness

Last updated 2026-04-20 15:42:40; freshness should be verified.

Geography

Data collected at CIRAD's Abiophen growing chambers; specific location not provided.