Genotype × environment × management analysis to define allometric rules between leaves and stems in wheat
Chen Zhu1, Shouyang Liu1, Boris Parent2
1Engineering Research Center of Plant Phenotyping, Ministry of Education, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, 210095 Nanjing, China.
Journal of Experimental Botany
|July 10, 2024
Summary
This study reveals genotype-specific allometric rules for wheat, linking leaf and stem traits. These rules help predict crop performance across diverse environments and management practices.
Area of Science:
- Plant physiology and agronomy
- Ecology and crop modeling
Background:
- Allometric rules simplify structure-function relationships across scales.
- Agronomy, plant phenotyping, and crop modeling benefit from these simplifications.
Purpose of the Study:
- To explore variations in wheat leaf/stem area and biomass allocation during the vegetative period.
- To evaluate the performance of allometric rules in genotype × environment × management contexts.
Main Methods:
- Utilized a large dataset spanning different years, countries, genotypes, and management practices.
- Analyzed relationships between leaf and stem area, leaf and stem biomass, and mass per area.
Main Results:
- Leaf and stem area relationship was linear, genotype-specific, and radiation-sensitive.
- Leaf and stem biomass relationship depended on genotype and nitrogen fertilization.
- Mass per area varied by developmental stage, environment, and genotype.
Conclusions:
- Allometric rules demonstrated satisfactory performance for wheat.
- Results inform models and minimum datasets for characterizing diversity panels and making predictions.
- Potential applications in phenotyping and crop modeling were discussed.
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