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Related Experiment Video

Updated: Jan 28, 2026

High-Throughput, In-Field Screening of Photosynthetic Efficiency in Crop Plants Using an Autonomous Robot
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Published on: January 9, 2026

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High-Throughput, In-Field Screening of Photosynthetic Efficiency in Crop Plants Using an Autonomous Robot.

Nicolin Caflisch1, Andreas Hund1, Onno Muller2

  • 1Crop Science, Institute of Agricultural Sciences, Swiss Federal Institute of Technology Zurich.

Journal of Visualized Experiments : Jove
|January 26, 2026
PubMed
Summary

Researchers developed a novel robotic system for high-throughput phenotyping of photosynthetic efficiency in crops. This technology enables precise measurements in field conditions, paving the way for improved crop yields through targeted genetic selection.

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Area of Science:

  • Agricultural Science
  • Plant Physiology
  • Robotics

Background:

  • Photosynthesis is crucial for crop productivity and nitrogen fixation.
  • Genetic gains in crop yield from traditional methods are plateauing.
  • Dynamic field conditions hinder accurate selection for photosynthetic performance.

Purpose of the Study:

  • To develop a high-throughput phenotyping method for photosynthetic efficiency.
  • To enable targeted genetic improvement of crop yield.
  • To overcome limitations of traditional field measurements.

Main Methods:

  • A light-induced fluorescence transient (LIFT) device was mounted on an autonomous field robot.
  • The robot utilized global navigation satellite system (GNSS) for navigation and measured quantum efficiency of photosystem II (Fq'/Fm').
  • Spectral and stereo RGB cameras provided data on 3D plant architecture and light intensity.

Main Results:

  • High spatiotemporal resolution maps of photosynthetic efficiency were generated.
  • The LIFT device enabled rapid, non-contact measurements ( < 1 ms from 1 m).
  • The system provided detailed insights into plant growth performance in field trials.

Conclusions:

  • The robotic LIFT system offers a powerful tool for precise phenotyping of photosynthetic traits.
  • This technology can accelerate breeding programs for enhanced crop productivity.
  • Accurate, high-resolution data is key to unlocking genetic potential for yield improvement.