Skip to main content

Table 5 Correlation coefficients between drought yield index and common drought indices under severe drought stress

From: Drought yield index to select high yielding rice lines under different drought stress severities

  REI MRP STI GMP MPI DYI TOL SSI SSSI
REI 1         
MRP 0.99 1        
MRP <.0001         
STI 0.98 0.97 1       
STI <.0001 <.0001        
GMP 0.97 0.97 0.99 1      
GMP <.0001 <.0001 <.0001       
MPI 0.88 0.89 0.92 0.92 1     
MPI <.0001 <.0001 <.0001 <.0001      
DYI −0.86 −0.88 −0.88 −0.92 −0.71 1    
DYI <.0001 <.0001 <.0001 <.0001 <.0001     
TOL −0.69 −0.67 −0.67 −0.67 −0.33 0.80 1   
TOL <.0001 <.0001 <.0001 <.0001 0.0385 <.0001    
SSI −0.90 −0.90 −0.90 −0.90 −0.68 0.93 0.91 1  
SSI <.0001 <.0001 <.0001 <.0001 <.0001 <.0001 <.0001   
SSSI −0.90 −0.90 −0.90 −0.90 −0.68 0.93 0.91 1 1
SSSI <.0001 <.0001 <.0001 <.0001 <.0001 <.0001 <.0001 <.0001  
  1. REI = relative efficiency index, MRP = mean relative performance, STI = stress tolerance index, GMP = geometric mean productivity, MPI = mean productivity index. DYI = drought yield index, TOL = tolerance index, SSI = stress susceptibility index, SSSI = Schneider’s stress severity index (modified).
  2. In each cell, the number on top is the correlation coefficient and the number below is the p-value of observing the corresponding correlation coefficient.