Table 2.

Parameters of the sterility curves obtained after a logistic adjustment

CrossesGeneration% of Prunay genesSIPTIP (°C)r2
Delhi strain  9.12±2.41 30.54±0.01 99.9 
   Female × Male      
      Prunay × Delhi F1 50 5.91±1.01 30.50±0.02 99.6 
      F1 × F1 F2 50 9.97±4.91 30.56±0.03 99.7 
      Prunay × F1 G2 75 5.86±1.83 30.09±0.04 98.6 
      Prunay × G2 G3 87.5 3.64±0.87 30.21±0.07 97.7 
      Prunay × G3 G4 93.75 2.79±0.46 30.24±0.07 97.8 
      Prunay × G4 G5 96.88 4.08±0.37 30.23±0.03 99.6 
      Prunay × G5 G6 98.44 4.35±0.31 30.23±0.02 99.8 
Prunay strain  100 4.58±0.61 29.47±0.03 99.3 
   Female × Male      
      Delhi × Prunay F1 50 3.37±0.97 29.95±0.11 95.7 
      F1 × F1 F2 50 5.87±1.77 29.88±0.04 98.5 
      Delhi × F1 G2 25 5.86±0.47 29.80±0.02 99.8 
      Delhi × G2 G3 12.5 6.05±0.44 30.15±0.01 99.9 
      Delhi × G3 G4 6.25 10.68±6.19 30.08±0.05 99.7 
      Delhi × G4 G5 3.12 4.45±0.35 30.11±0.02 99.8 
      Delhi × G5 G6 1.56 4.99±0.35 30.15±0.02 99.8 
CrossesGeneration% of Prunay genesSIPTIP (°C)r2
Delhi strain  9.12±2.41 30.54±0.01 99.9 
   Female × Male      
      Prunay × Delhi F1 50 5.91±1.01 30.50±0.02 99.6 
      F1 × F1 F2 50 9.97±4.91 30.56±0.03 99.7 
      Prunay × F1 G2 75 5.86±1.83 30.09±0.04 98.6 
      Prunay × G2 G3 87.5 3.64±0.87 30.21±0.07 97.7 
      Prunay × G3 G4 93.75 2.79±0.46 30.24±0.07 97.8 
      Prunay × G4 G5 96.88 4.08±0.37 30.23±0.03 99.6 
      Prunay × G5 G6 98.44 4.35±0.31 30.23±0.02 99.8 
Prunay strain  100 4.58±0.61 29.47±0.03 99.3 
   Female × Male      
      Delhi × Prunay F1 50 3.37±0.97 29.95±0.11 95.7 
      F1 × F1 F2 50 5.87±1.77 29.88±0.04 98.5 
      Delhi × F1 G2 25 5.86±0.47 29.80±0.02 99.8 
      Delhi × G2 G3 12.5 6.05±0.44 30.15±0.01 99.9 
      Delhi × G3 G4 6.25 10.68±6.19 30.08±0.05 99.7 
      Delhi × G4 G5 3.12 4.45±0.35 30.11±0.02 99.8 
      Delhi × G5 G6 1.56 4.99±0.35 30.15±0.02 99.8 

Results of crosses and backcrosses between Prunay and Delhi strains. The proportion of Prunay genes on X and autosomes is given for each generation. Backcrosses introduce the Y chromosome of Delhi in a Prunay background, and the Y chromosome of Prunay in the Delhi background.

SIP, slope coefficient at inflection point (mean ± s.d.);TIP, temperature at inflection point (mean ± s.d.); r2: value of the logistic adjustment × 100.

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