This collection features five peer-reviewed reviews on optimising photosynthesis in crops. The first chapter reviews current understanding of the biochemistry, regulation and limitation of the C3 photosynthesis cycle in crops. It provides detailed discussions on CO2 assimilation in C3 photosynthesis, as well as the carboxylation, reduction and regeneration phases of the C3 cycle. The second chapter considers the recent emergence of using phenotyping techniques to analyse crop functionality and photosynthesis. It reviews the relationship between photosynthesis, crop growth and stress...