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Table 4 Correlations between SPAD value and VIs

From: Applying spectral fractal dimension index to predict the SPAD value of rice leaves under bacterial blight disease stress

VIs

Correlation coefficient

SFDI

0.8263**

MSAVI

0.8024**

RVI

0.7947**

VARIred

0.7235**

NPCI

0.6426*

NDVI

0.5545**

SAVI

0.4989*

GNDVI

0.4559*

VOG3

0.3125**

VOG1

− 0.2692**

NDI

− 0.3752**

VOG2

− 0.4041**

PSRI

− 0.4591*

PRI

− 0.4779**

VARIgreen

− 0.5852**

MTCI

− 0.7541**

MCARI

− 0.7578**

  1. * and ** indicate that correlations are significant at confidence levels of 0.05 and 0.01, respectively
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Plant Methods

ISSN: 1746-4811