Differential response of domestic and wild Lycopersicon species to chilling under low light : Growth, carbohydrate content, photosynthesis and the xanthophyll cycle

capacity for shoot regrowth (39%) compared to the low-altitude wild species L. pimpinellifolium (Jusl.) Mill. PI187002 experiment in the domestic and low-altitude species (63‐73%) (82%) and three wild species originating from high altitude: L. than in their relatives from high altitude (8‐29%). In response peru7ianum Mill. LA 385 (92%), L. hirsutum Humb. & to chilling, the domestic and low-altitude species showed an increase in the total xanthophyll cycle pool on Chl basis, Bonpl. LA 1777 (67%) and L. chilense Dunn. LA 1970 (71%). The inter-specific differences in chilling sensitivity at the whereas the de-epoxidation state of the xanthophyll cycle chloroplast level, analyzed by the decline of the maximum rate increased in the high-altitude wild species. Both responses resulted in increased zeaxanthin levels in chilled leaves of all of induced Chl fluorescence rise (FR) after 40 h at 0°C and the Lycopersicon species. temperature at which qP reached the value 0.5, correlated in