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ALPHA: A High Throughput System for Quantifying Growth in Aquatic Plants.

Kassidy A Robinson¹, Victoria Augoustides², Tanaka Madenyika¹

¹Department of Molecular and Structural Biochemistry North Carolina State University Raleigh NC USA.

|March 14, 2025

Summary

Duckweeds show promise for sustainable agriculture, offering higher yields and reduced environmental impact. An automated phenotyping system, ALPHA, aids in breeding these aquatic plants for improved crop traits.

Keywords:

Lemna gibba duckweed high‐throughput phenotyping selective breeding sustainable agriculture

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Area of Science:

Agricultural Science
Plant Biology
Environmental Science

Background:

Growing global demand for agricultural products necessitates sustainable systems.
Climate change exacerbates agricultural challenges, impacting yields and increasing greenhouse gas emissions.
Current agricultural practices contribute significantly to environmental degradation.

Purpose of the Study:

To introduce the Automated Lab-scale PHenotyping Apparatus (ALPHA) for high-throughput phenotyping of Lemnaceae (duckweeds).
To utilize ALPHA for selective breeding of *Lemna gibba* as a sustainable crop.
To assess the potential of duckweeds in enhancing agricultural output and reducing environmental harm.

Main Methods:

Development and application of the Automated Lab-scale PHenotyping Apparatus (ALPHA).
High-throughput phenotyping of Lemnaceae species.
Selective breeding of *Lemna gibba* using ALPHA for trait assessment.
Demonstration of saltwater tolerance testing for *L. gibba* clones.

Main Results:

ALPHA enables efficient, high-throughput phenotyping of small aquatic plants.
Selective breeding of *Lemna gibba* is underway using ALPHA.
Saltwater tolerance of six *L. gibba* clones was successfully determined using ALPHA.

Conclusions:

Duckweeds (Lemnaceae) present a viable option for developing sustainable agricultural systems.
ALPHA is a valuable tool for accelerating the breeding and development of new crop species like duckweed.
Further research and breeding efforts can optimize duckweed cultivation for increased food, feed, fuel, and fiber production with reduced environmental impact.