Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. photosynthesis 1406-65-1 Chlorophyll food security Cropping system Field phenotyping Gas exchange Review Rubisco climate change gross primary productivity heat stress hyperspectral images hyperspectral imaging phenotyping photorespiration plant breeding proximal sensing resilience solar-induced fluorescence spectral reflectance stomata thermotolerance vapour pressure deficit