The Use of High-Throughput Phenotyping for Assessment of Heat Stress-Induced Changes in Arabidopsis
Early changes in photochemical quenching correspond to larger rosette area. The correlation matrix between photochemical quenching () and rosette area scored at various days after stress (DAS) application for the plants (a) not exposed to heat stress and exposed to (b) 3 h, (c) 6 h, or (d) 9 h of heat stress (45°C). The positive correlation coefficients are indicated with blue, while negative correlation coefficients with red in the upper part of the correlogram. The Pearson correlation coefficient values are listed as numbers in the lower part of each correlogram. The value for each correlation pair, as calculated per -test, are indicated in the upper part of each correlogram with ,,, and indicating a value below 0.05, 0.01, 0.001, and 0.0001, respectively.