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Table 2 Inheritance Pattern of Gain-Of-Resistance Phenotype in G978 M4 and Backcross Families

From: A Recessive Mutation in Rice Conferring Non-Race-Specific Resistance to Bacterial Blight and Blast

Category Parent (S phenotype) Number of progeny Observed segregation ratio χ 2 P valuea
Susceptible Resistantb
M4 segregating family G978-12-2 20 15 5 0 1.0
G978-12-4 20 17 3 1.07 0.30
G978-12-5 20 12 8 2.40 0.12
G978-12-6 20 16 4 0.27 0.61
G978-12-7 19 15 4 0.16 0.69
G978-12-8 20 12 8 2.40 0.12
Pooled M4 families 119 89 30 0.003 0.96
BC1F2 G978-18 × IR64 98 81 17 3.061 0.08
  1. a P-value ≥ 0.05 indicates non-significant deviation from the 3 susceptible:1 resistance ratio based on Chi-square test
  2. bExpected segregation ratio is 3S:1R if character is controlled by a single, recessive gene