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. 2017 Jan 11;12(1):e0169954. doi: 10.1371/journal.pone.0169954

Table 1. The anthracnose resistance of the parents and F2:3 families.

Parent or cross No. of plants or lines Expected ratio Χ2 P-value
Resistant Segregating Susceptible
Hongyundou P1 30
Jingdou P2 30
Hongyundou × Jingdou F1 50
Hongyundou × Jingdou F2 138 44 3:1 0.029 0.864
Hongyundou × Jingdou F2:3 247 549 296 1:2:1 4.43 0.109

The values for the significance of the χ2 tests at P = 0.05 were 3.83 for 1 df and 5.99 for 2 df.