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Table 3 Multiple regression and path analyses of organic acids of TCA cycle

From: Analysis of organic acids of tricarboxylic acid cycle in plants using GC-MS, and system modeling

Multiple regression equation
MA (mg/g dw) = − 4.16 + 2.28 CA (mg/g dw) + 4.99 SA (mg/g dw) – 6.01 FmA (mg/g dw)
Multiple correlation coefficient (r) = 0.5010 (p < 0.001)
Path analysis
Independent variables Direct effects (DE) on MA Indirect effects (IE) on MA Total effects (DE + IE)
CA SA FmA Total IE
Citric acid (CA) 0.5393 0 − 0.0204 − 0.0265 − 0.0469 0.4924
Succinic acid (SA) 0.1252 − 0.0879 0 − 0.0976 − 0.1856 − 0.0604
Fumaric acid (FmA) − 0.1398 0.1024 0.0874 0 0.1899 0.0501