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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.