The variability among the results on both leaf and canopy scales 
may have suffered influences by the fact that the last one 
comprises leaves with several levels of sun exposure and non- 
leaf vegetable material. 
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6. ACKNOWLEDGEMENTS 
The authors would like to thank the FOTOTERRA/SpecTIR 
team (particularly to Guilherme Pinho and Conrad Wright) for 
providing the images used in the study; and Paulo de Souza 
Gonçalves of the Agronomic Institute (IAC) for to help in the 
clones discrimination in the field. FAPESP is acknowledged for 
the PhD grant to Cibele Hummel do Amaral (2010/51718-0). 
  
    
   
    
    
   
  
   
    
    
     
    
    
    
   
    
    
     
  
     
     
   
   
     
    
  
   
     
   
    
    
    
     
   
    
  
    
   
  
   
   
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