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

Rice

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

Category	Parent (S phenotype)	Number of progeny	Observed segregation ratio		χ ²	P value^a
Category	Parent (S phenotype)	Number of progeny	Susceptible	Resistant^b	χ ²	P value^a
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

^a P-value ≥ 0.05 indicates non-significant deviation from the 3 susceptible:1 resistance ratio based on Chi-square test
^bExpected segregation ratio is 3S:1R if character is controlled by a single, recessive gene