Comparison of leaf morpho-anatomical characters in Amaranthus spp.: phenotyping as an investigative tool for environmental and agricultural sciences

Plant phenotyping is an important tool that can provide insight into the interaction between plants and the environment, often as supporting information for genotype studies. The resulting knowledge can be useful in eco-physiological research, to understand how species adapt to their growing conditions and to biotic competition. In recent years, phenotyping techniques for the study of plant morpho-anatomical traits have developed in the field of the imaging analysis, starting from microscope images up to high scale acquisitions through remote sensing. In this work, we focused on the detailed study of single-leaf morphometric traits through the processing of photographic and confocal microscope acquisitions. Four species of Amaranthus were used, being plants of interest due to their high invasiveness into fields. Their morphological traits could become a useful tool to describe their adaptative responses and to define strategies for the sustainable management of the agro-ecosystem.