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Table 4 Grand mean performance, blend response (BR %), heterotic response (HR %) and susceptibility index (SSI) for four populations of cotton genotypes cultivated in normal and late planting date

From: Blend response of four Egyptian cotton population types for late planting stress tolerance

Genotype NP LP SSI NP LP SSI
Mean BR % HR % Mean BR % HR % Mean BR % HR % Mean BR % HR %
  Seed cotton yield/plant; SCY/P (g) Lint cotton yield/plant; LCY/P (g)
Inbreds 177.9    123.3    1.3 70.2    46.9    1.1
Hybrids 166.7   − 3.1 90.9   − 22.3 2.1 67.2   − 0.5 35.1   − 21.0 2.0
Blends of inbreds 123.4 − 30.4   144.2 24.9   − 0.9 49.5 − 28.6   55.9 25.2   − 0.6
Blends of hybrids 143.5   − 4.9 86.1   49.2 0.4 56.8   − 10.0 48.2   52.0 0.4
Overall mean 150.2    119.5     60.1    46.2    
LSD0.05 66.9    9.3     28.1    3.56    
  Bolls/Plant Lint percentage; LP (%)
Inbreds 13.0    8.0    1.7 39.6    38.1    
Hybrids 11.8   − 4.8 6.0   − 12.6 2.2 40.4    38.8    
Blends of inbreds 8.8 − 32.2   9.3 15.3   − 1.0 40.2    38.7    
Blends of hybrids 9.5   − 14.2 9.3   54.1 − 0.3 39.6    39.2    
Overall mean 10.6    8.6     40.0    38.7    
LSD0.05 4.9    1.2     ns    ns    
  Seed index; SI (g) Lint index; LI (g)
Inbreds 8.9    8.8    0.2 5.9    5.5    
Hybrids 9.3   4.4 8.3   − 7.3 2.1 6.4    5.1   − 3.3  
Blends of inbreds 8.9 − 1.8   8.9 − 0.15   − 0.1 6.0    5.5 1.9   
Blends of hybrids 8.9   − 2.0 8.6   3.8 0.6 5.9    5.6   7.0  
Overall mean 9.0    8.6     6.1    5.4    
LSD0.05 0.3    0.1     ns    0.8