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Table 2 Coefficients of correlation (r) between concentrations of grain protein (GPC) and mineral nutrients in a collection of 150 bread wheat genotypes from India and Turkey

From: Assessment of genetic variability for grain nutrients from diverse regions: potential for wheat improvement

  Macro-elements Micro-elements
Ca K Mg Na P S Zn Cu Fe Mn
Macro-elements
K 0.030          
p value 0.717          
Mg 0.615** 0.318**         
p value 0.000 0.000         
Na 0.224* 0.201* 0.293**        
p value 0.006 0.014 0.000        
P 0.324** 0.622** 0.738** 0.290**       
p value 0.000 0.000 0.000 0.000       
S 0.312** 0.056 0.387** 0.033 0.044      
p value 0.000 0.496 0.000 0.686 0.589      
Micro-elements
Zn 0.492** 0.341** 0.544** 0.164* 0.538** 0.319**     
p value 0.000 0.000 0.000 0.045 0.000 0.000     
Cu 0.025 0.039 0.118 0.018 −0.059 0.433** 0.255*    
p value 0.763 0.632 0.151 0.824 0.472 0.000 0.002    
Fe 0.158 −0.084 0.202* 0.048 0.011 0.300** 0.172* 0.348**   
p value 0.053 0.309 0.013 0.560 0.891 0.000 0.036 0.000   
Mn 0.228* −0.032 0.151 −0.061 0.263* 0.051 0.373** 0.147 0.049  
p value 0.005 0.694 0.065 0.461 0.001 0.536 0.000 0.073 0.551  
GPC 0.072 −0.076 0.101 0.043 −0.151 0.633** 0.099 0.270* 0.231* −0.144
p value 0.381 0.357 0.220 0.603 0.065 0.000 0.227 0.001 0.004 0.079
  1. Asterisks indicate significance at *p < 0.05 and at **p < 0.001)