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Table 2 Phenotypic correlation coefficients among root traits by entry class

From: Characterization of mature maize (Zea mays L.) root system architecture and complexity in a diverse set of Ex-PVP inbreds and hybrids

Entry class N a   Pearson correlation coefficients
FD FA RA SD
Parent 72 FD 1    
FA 0.74*** 1   
RA −0.40** 0.06 1  
SD 0.48*** 0.54*** 0.02 1
F1 386 FD 1    
FA 0.88*** 1   
RA −0.05 0.13* 1  
SD 0.61*** 0.61*** −0.13** 1
Check 45 FD 1    
FA 0.88*** 1   
RA −0.10 −0.09 1  
SD 0.69*** 0.68*** −0.33* 1
  1. FD fractal dimension, FA fractal abundance, RA root angle and STD stalk diameter.
  2. ***, **, * Correlation coefficients are significant at the 0.0001, 0.001, and 0.05 unadjusted probability levels, respectively.
  3. aNumber of plot means per entry class.