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Fig. 5 | BMC Plant Biology

Fig. 5

From: Effects of nitrate- and ammonium- nitrogen on anatomical and physiological responses of Catalpa bungei under full and partial root-zone drought

Fig. 5

Correlation between growth, anatomical and physiological parameters under combined conditions of water and N forms. (A) Principal component analysis (PCA). (B) Pearson’s correlation analysis. The four water conditions (well-watered condition (WW), partial-root zone drought in horizontal (H-PRD) and vertical (V-PRD) direction, and full root zone drought (FRD)) are combined with nitrate (NN) or ammonium (AN) treatment. Traits related to physiological responses, seedling growth and xylem development are included in PCA and Pearson’s correlation analysis. *P < 0.05; **P < 0.01; ***P < 0.001

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BMC Plant Biology

ISSN: 1471-2229

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