Related Experiment Video
Updated: Jul 9, 2026
11:37
RGB and Spectral Root Imaging for Plant Phenotyping and Physiological Research: Experimental Setup and Imaging Protocols
Published on: August 8, 2017
Early belowground interactions in lupin-wheat intercropping assessed by a simple root phenotyping approach
Roberta Rossi1, Daniele Cavalli2, Tommaso Notario2
1Council for Agricultural Research and Economics (CREA), Research Centre for Animal Production and Aquaculture, SS 7 Via Appia, 85051 Bella, PZ Italy.
Plant and Soil
|July 8, 2026
Summary
Legume-cereal intercropping alters white lupin root architecture, promoting root overlap and increased nodulation. This suggests enhanced nutrient sharing and biological nitrogen fixation in intercropping systems.
Area of Science:
- Agricultural Science
- Plant Biology
- Ecology
Background:
- Legume-cereal intercropping enhances agricultural sustainability.
- Underground plant-plant interactions are crucial but challenging to study.
- Methodological limitations hinder understanding of belowground root interactions.
Purpose of the Study:
- To develop a rapid rhizobox-based root phenotyping method for studying early intercropping interactions.
- To analyze spatial root metrics and root overlap using a novel Root Merge (RM) index.
- To identify root traits associated with facilitative processes in white lupin-wheat intercropping.
Main Methods:
- Utilized a rhizobox system for indoor root phenotyping of white lupin.
- Assessed spatial root metrics and calculated the Root Merge (RM) index.
- Recorded root traits potentially promoting facilitative interactions.
Main Results:
- White lupin modified root architecture spatially, not total root production, in response to intercropping.
- The RM index revealed distinct root behaviors: avoidance in pure stands (RM=0.17) and intermingling in intercropping (RM=0.69).
- Intercropping increased lupin nodulation, indicating enhanced biological nitrogen fixation and facilitative interactions.
Conclusions:
- Root visual parameters effectively indicate phenotypic plasticity in intercropping.
- The developed method is applicable to other legume-cereal combinations and plant types.
- Rhizobox root phenotyping offers insights into belowground interactions crucial for sustainable agriculture.
