The grey correlation degree

The weighted index

Conductivity of 5% PEG

SOD of 5% PEG

POD of 10% PEG

ABA of 10% PEG

The weighted index

1

0.716

0.8589

0.6637

0.829

Conductivity of 5% PEG

0.716

1

0.6651

0.879

0.8284

SOD of 5% PEG

0.8589

0.6651

1

0.6175

0.7362

POD of 10% PEG

0.6637

0.879

0.6175

1

0.7489

ABA of 10% PEG

0.829

0.8284

0.7362

0.7489

1