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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.