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Table 5 Spearman correlation matrix among growth traits, tree physiological stress variables, disease-related variables, and altitude and climatic parameters at the site of origin in six Pinus pinaster provenances. N = 6

From: Variation in pinewood nematode susceptibility among Pinus pinaster Ait. provenances from the Iberian Peninsula and France

 

Growth traits

Stress variables

Disease-related variables

Altitude

Climatic variables

Total height (m)

Growth from the previous year’s growth until inoculation (cm)

Number of branches

Pre-inoculation oleoresin flow (cm)

Chlorophyll fluorescence ratio exp. 2

Mortality exp. 2

Mortality exp. 3

Wilting exp. 2

Wilting exp. 3

Altitude (m)

Continentality index

Mean summer maximum temperature (°C)

Mean autumn minimum temperature (°C)

Mean summer temperature (°C)

Autumn precipitation (mm)

Basal diameter (mm)

− 0.77

 

0.94**

0.77

− 0.83*

 

− 0.89*

 

− 0.83*

0.77

0.94**

0.81*

− 0.77

 

− 0.77

Total height (cm)

      

0.77

  

− 0.90*

 

− 0.77

0.89*

  

Growth from the previous year’s growth until inoculation date (cm)

   

− 0.89*

      

− 0.89*

 

0.83*

  

Number of branches

    

− 0.94**

 

− 0.83*

 

− 0.89*

 

0.83*

0.94**

 

0.81*

 

Pre-inoculation oleoresin flow (cm)

    

− 0.77

− 0.83*

 

− 0.83*

  

0.89*

0.77

   

Chlorophyll fluorescence ratio exp. 2

     

− 0.83*

 

0.83*

0.77

 

− 0.77

− 0.83*

 

− 0.75

 

Mortality exp. 2

       

1.00***

       

Mortality exp. 3

        

0.94**

− 0.77

− 0.77

− 0.89*

0.77

 

0.94**

Wilting exp. 2

               

Wilting exp. 3

           

− 0.83*

 

− 0.75

0.83*

Altitude (m)

            

− 0.89*

  

Continentality index

           

0.94*

− 0.83*

  
  1. ***p < 0.001; **p < 0.01; *p < 0.05; p < 0.10