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Canopy architecture is described by the quantity and three-dimensional display of leaves in a crop canopy, which determines light interception and subsequent canopy photosynthesis. While many crop canopies were reshaped by selection during the Green Revolution, there is further opportunity for improvement of the light environment within crop canopies and the canopy light use efficiency in modern crops is modeled to be sub-optimal. Thus, there is growing interest in understanding how the canopy architecture affects the light environment, canopy carbon assimilation and transpiration, and ultimately yield. In this chapter, we review how light is modeled within crop canopies, describe how selection has altered crop canopies, and describe opportunities to improve architectural features of the canopy to improve radiation use efficiency. Finally, we discuss considerations for the adoption of canopies better suited to their environment and management practices.
- 1 Introduction
- 2 Modeling light within crop canopies
- 3 Impacts of breeding on modern crop canopy architecture
- 4 Potential targets for canopy improvement
- 5 Canopies under different environments
- 6 Conclusion
- 7 Future trends in research
- 8 Acknowledegements
- 9 Appendix
- 10 References