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. 2014 May 8;5:182. doi: 10.3389/fpls.2014.00182

Figure 7.

Figure 7

Relative average expression (log2) of genes encoding enzymes involved in polyamine biosynthesis under control conditions in three tolerant vs. sensitive cultivars used in drought and salt stress experiments. Relative gene expression (log2) in comparison to the housekeeping genes is shown for drought- and salt-tolerant (52, 4, 1) and drought- (22, 2, 50) and salt-sensitive cultivars (22, 2, 50) under control conditions. Data represent the means of three cultivars from either one or two biological replicates with three technical replicates each. Significance levels are indicated as: 0.01 < p < 0.05 (*) in comparison to the respective tolerant cultivars.