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Related Experiment Video

Updated: Feb 20, 2026

Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images

Cereal Crop Ear Counting in Field Conditions Using Zenithal RGB Images

Published on: February 2, 2019

Reducing shade avoidance responses in a cereal crop.

Wibke Wille¹, Christian B Pipper², Eva Rosenqvist¹

¹Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg, Denmark.

|October 27, 2017

Summary

This summary is machine-generated.

Researchers developed spring wheat mutants with reduced shade avoidance. This trait is crucial for improving crop yield and weed suppression in changing light conditions.

Keywords:

Cereals forward screening induced mutations mutant screening plasticity red:far-red

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Area of Science:

Plant Biology
Agronomy
Genetics

Background:

Shade avoidance behavior, while potentially beneficial for wild plants, negatively impacts crop yield by reducing resource allocation to reproduction and increasing lodging risk.
Developing crop varieties with reduced shade avoidance is essential for enhancing agricultural performance.

Purpose of the Study:

To generate and identify spring wheat mutants exhibiting reduced shade avoidance responses through a forward genetics approach.
To evaluate the agronomic potential of these mutants in modified light environments.

Main Methods:

Spring wheat seeds were treated with ethyl methanesulfonate to induce mutations.
Seedlings were screened under green filters for reduced leaf sheath and lamina elongation.
Promising mutant lines were further tested in climate chambers with controlled light, including added far-red light, to assess shade avoidance responses.

Main Results:

Five promising mutant lines with reduced shade avoidance were identified.
Two lines showed significantly reduced elongation under all light conditions.
One mutant line exhibited 20.6% less elongation in strong far-red light compared to the non-mutated cultivar, without affecting height in neutral light.

Conclusions:

Traditional forward screening of mutagenized spring wheat is effective in producing plants with reduced shade avoidance.
These mutants offer potential molecular targets for modifying plant responses to light spectral distribution in various cultivation systems.
The identified mutants could contribute to developing improved crop varieties with enhanced yield and resilience.