Fig. 4

Gene network systems (a), PCA analysis (b) and correlation matrix (c) carried out on the data matrix of daily gene expression levels of 3 wheat cultivars in 18°Cuv (18 °C unvernalized) treatment. The PCA analysis was presented as a supplementary, even more relevant illustration of the correlations between the genes investigated. CCA1, CIRCADIAN CLOCK-ASSOCIATED 1; CO1, CONSTANS 1; CRY1, CRYPTOCHROME 1; CRY2, CRYPTOCHROME 2; ELF3, EARLY FLOWERING 3; GI, GIGANTEA; LUX, ARRHYTHMO; PHYA, PHYTOCHROME A; PHYB, PHYTOCHROME B; PHYC, PHYTOCHROME C; PPD1, PHOTOPERIOD1; PRR95, PSEUDORESPONSE REGULATOR 95; TOC1, TIMING OF CAB EXPRESSION1; VRN1, VERNALIZATION1 (APETALA1) ; VRN2, VERNALIZATION2; VRN3, VERNALIZATION3 (FLOWERING LOCUS T).