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Table 6 Selected coefficients of correlation between crop traits measured in the field and remote detected temperature difference (dT) shown for different times of measurement

From: Remote, aerial phenotyping of maize traits with a mobile multi-sensor approach

Ground plant trait

dT

 

DAS a

81

96

103

113

117

Plant vigour rating

47

−0.45***

−0.4**

   

LSCb

81

0.09 ns

−0.08 ns

   

LTMPc

81

−0.16 ns

−0.1 ns

   

Radiation interception

81

−0.59***

−0.55***

   

Radiation interception

97

−0.55***

−0.24 ns

   

Total plant biomass

81-97

−0.38*

−0.34*

   

Plant height

81-97

−0.46***

−0.53***

   

LAId

81-97

−0.52***

−0.49***

   

LSC

103

  

−0.07 ns

−0.27*

0.17 ns

LTMP

103

  

−0.06 ns

−0.19 ns

0.09 ns

Stay green rating

105

  

0.12 ns

0.2 ns

0.34**

Stay green rating

112

  

0.1 ns

0.12 ns

0.36**

LSC

117

  

−0.17 ns

−0.21 ns

−0.13 ns

LTMP

117

  

0.45***

0.53***

0.28*

Radiation interception

118

  

−0.52***

−0.29*

−0.66***

  1. aDays after sowing, see Table 2 for conversion in thermal time, bLeaf stomatal conductance (mmol m−2 s−1), cLeaf temperature (°C), dLeaf area index (m2 m−2).
  2. Significance codes are: ‘***’ p-value < 0.001, ‘**’ p-value < 0.01 and ‘*’p-value < 0.05.