Non‐invasive monitoring of tomato graft dynamics using thermography and fluorescence quantum yields measurements

• DOI: 10.1111/ppl.13935
• Publication Date: 2023-05-18T07:15:36Z
• Authors: Carlos Frey; Andrés Hernández‐...; Antonio Encina; José Luis Acebes
• Keywords: Thermography; Quantum yield

Grafting involves a sequence of modifications that may vary according to genotypes, grafting techniques and growing conditions. This process is often monitored using destructive methods, precluding the possibility monitoring entire in same grafted plant. The aim this study was test effectiveness two non-invasive methods-thermographic inference transpiration determination chlorophyll quantum yields-for graft dynamics tomato (Solanum lycopersicum L.) autografts compare results with other reliable measures: mechanical resistance parameters xylem water potential. plants steadily increased from 6 days after (DAG), 4.90 ± 0.57 N/mm, reach values similar non-grafted at 16 DAG, 8.40 1.78 N/mm. Water potential showed an early decrease (from -0.34 0.16 MPa -0.88 0.07 2 DAG), recovering 4 DAG pre-grafting 12-16 DAG. Thermographic displayed comparable changes. Monitoring maximum effective yield functional grafts pattern: initial decline, followed by recovery onwards. Correlation analyses revealed significant correlation between variation temperature (thermographic transpiration), (r = 0.87; p 0.02) tensile force 0.75; 0.05). Additionally, we found some parameters. In conclusion, thermography monitoring, lesser extent measurements, accurately depict changes key serve as timing indicators regeneration, rendering them valuable tools for functionality.