Table 2 Segregation ratios of F2 and F2:3 generations of Guinong 29 (GN29) and Ping’an 9 (PA9) following inoculation with Blumeria graminis f. sp. tritici (Bgt) isolates E09 and E18 at the seedling stage.

From: Genetic basis of an elite wheat cultivar Guinong 29 with harmonious improvement between multiple diseases resistance and other comprehensive traits

Bgt isolates

Cross

Plants observed

Expected ratio

Χ2

P

HR

Seg

HS

E18

GN29 × PA9 F1

0

10

0

–

–

–

E18

GN29 × PA9 F2

276

105

3:1

1.33

0.24

E18

GN29 × PA9 F2:3

95

179

98

1:2:1

0.58

0.75

E09

GN29 × PA9 F1

0

10

0

–

–

–

E09

GN29 × PA9 F2

143

9

15:1

0.03

0.87

E09

GN29 × PA9 F2:3

65

76

8

7:8:1

0.22

0.90

  1. Values of χ2 for statistical significance at P = 0.05 are 3.84 (df1) and 5.99 (df2); R: Resistant, S: Susceptible, HR: homozygous resistant, Seg: segregating, HS: homozygous susceptible.
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