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Table 6 Simple correlation analysis between root characteristics, photosynthetic characteristics and chlorophyll content of potted tomato

From: Effect of soil aeration on root morphology and photosynthetic characteristics of potted tomato plants (Solanum lycopersicum) at different NaCl salinity levels

FactorRoot lengthRoot surface areaRoot volumeforksPnGsCiTrIWUEChl. aChl. bChl. (a + b)
Root length1           
Root surface area0.991**1          
Root volume0.961**0.989**1         
forks0.988**0.992**0.975**1        
Pn0.707*0.696*0.670*0.657*1       
Gs0.758**0.742**0.710**0.719**0.962**1      
Ci−0.517−0.500−0.474−0.457−0.809**−0.740**1     
Tr0.3880.4440.4960.3830.622*0.485−0.2771    
IWUE0.657*0.605*0.5360.616*0.709**0.806**−0.770**−0.0831   
Chl. a0.764**0.773**0.769**0.747**0.882**0.822**−0.830**0.616*0.635*1  
Chl. b0.4450.4840.5270.4470.4750.397−0.760**0.2850.4340.743**1 
Chl. (a + b)0.713**0.731**0.741**0.700*0.811**0.742**−0.856**0.5520.611*0.980**0.862**1
  1. Note: * represents a significant difference (p < 0.05), and ** represents an extremely significant difference (p < 0.01)