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. 2024 Nov 20;14:28699. doi: 10.1038/s41598-024-80164-0

Fig. 6.

Fig. 6

Principal component analysis (PCA) was applied to the chlorophyll fluorescence parameter related to the climate change variables (temperature, CO2 and irrigation regimes). Two principal components (PC1 and PC2) resulted in a model that explained 67.14% of the total variance.