The Use of High-Throughput Phenotyping for Assessment of Heat Stress-Induced Changes in Arabidopsis
Heat-stress induced reduction in photochemical quenching indicates heat susceptibility. The correlation between photochemical quenching () and rosette area was examined for plants not exposed to heat stress and plants exposed to 3 h, 6 h, or 9 h of heat stress (45°C). The correlation was examined between scored at 0 days after stress (DAS) imposition and rosette area at (a) 0 DAS and (b) 7 DAS and between scored at 1 DAS and rosette area at (c) 1 DAS and (d) 7 DAS, as well as (e) scored at 7 DAS and rosette area at 7 DAS. The correlation coefficients () for individual genotypes (WT and hsp101) as well as the corresponding values as calculated per Pearson’s correlation -test are indicated with different colours. The lines in each graph represent the regression line for each treatment and genotype combination. The individual plants are represented by individual dots.