Figure 1. Principal component analysis (PCA) of FT-IR spectra of Arabidopsis stem material.

Powdered stem tissue from wild type and rabA sub clade mutant lines of Arabidopsis were subjected to analysis using FT-IR. The spectral data in the region of1200 nm–800 nm was used to generate the PCA. The total number of principle components identified was 5, PC1 = 0.59 PC2 = 0.39, with the remaining components each totalling less than 0.1 of the variation.