Table 8 Correlation analysis between ear traits and yield (n = 65).

From: Density resistance evaluation of maize varieties through new “Density–Yield Model” and quantification of varietal response to gradual planting density pressure

Yield index

Items

Ear length

Bald-tip length

Ear perimeter

Ear number per unit area

Grain number per unit area

Thousand kernel weight

Ear bald-tip length

−0.4464**

     

Ear perimeter

0.7470**

−0.7226**

    

Ear number per unit area

0.0972

−0.0015

−0.2004

   

Grain number per unit area

−0.0267

−0.1029

0.0189

0.7085**

  

Thousand-kernel weight

0.7837**

−0.6147**

0.4292**

−0.6719**

−0.4277**

 

Yield of single plant

0.8533**

−0.6936**

0.8620**

−0.9210**

−0.5575**

0.6833**

Yield per unit area

−0.0722

0.1449

−0.2123

0.4584**

0.8332**

−0.0800

  1. **Significant at the 0.01 probability level;*Significant at the 0.05 probability level.
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