PRI & the Power of Spectral Indices

In this brief 30-minute webinar, Dr. John Gammon, University of Alberta, teaches the basics of the Photochemical Reflectance Index (PRI).

He gives an introduction to the photochemical reflectance index and what it can tell researchers about xanthophyll cycle activity, carotenoid: chlorophyll pigment ratios, light-use efficiency, and plant stress. He also discusses remote sensing.

Topics include:

• Energy distribution in a leaf
• Leaf optical changes upon shade removal
• Photosynthetic light response curve
• Uses as a stress indicator
• Temporal and spacial patterns in photoprotection
• How does photoprotection vary with tree age?
• Kinetics: sun vs. shade
• Applications
• Can it “scale”?
• Light-use efficiency model

Watch the webinar

More canopy webinars:

Using PRI to Monitor Crop Stress

Leaf Area Index: Theory, Measurement, and Application

NDVI and PRI: Measurement, Theory, and Application

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