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Related Experiment Video

Updated: Oct 17, 2025

Extracting Metrics for Three-dimensional Root Systems: Volume and Surface Analysis from In-soil X-ray Computed Tomography Data

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Published on: April 26, 2016

Capturing in-field root system dynamics with RootTracker.

Jeffrey J Aguilar¹, Matt Moore¹, Logan Johnson¹

¹Hi Fidelity Genetics, Durham, NC USA.

Plant Physiology

|October 7, 2021

Summary

This summary is machine-generated.

A new RootTracker technology uses impedance sensors to monitor maize root growth in the field. This innovation reveals how water deficits impact root development and suggests potential for breeding drought-tolerant crops.

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Area of Science:

Plant science
Agricultural engineering
Climate change adaptation

Background:

Root system architecture is crucial for crop resilience to environmental stresses like drought.
Current methods for measuring in-field root growth are limited, hindering breeding efforts for stress tolerance.

Purpose of the Study:

To introduce and validate the RootTracker, a novel technology for real-time, in-field monitoring of root system dynamics.
To investigate the impact of water deficits on maize root growth and identify potential breeding targets for drought adaptation.

Main Methods:

Developed RootTracker using 264 impedance touch sensors arranged around a seed to detect root proximity.
Monitored root growth of commercial maize hybrids under field conditions with varying irrigation regimes.
Analyzed changes in capacitance and resistance to infer root touching and growth patterns over time.

Main Results:

RootTracker successfully captured dynamic root growth responses to water deficits in maize.
Observed a 'priming response' where early water stress led to increased root growth later.
Identified genotypic variations in root growth responses to drought, indicating breeding potential.

Conclusions:

The RootTracker is an effective tool for in-field root growth monitoring and studying plant responses to environmental changes.
Findings highlight the potential for breeding maize with enhanced root systems for improved drought tolerance.
This technology can accelerate the development of climate-resilient crop cultivars.