TABLE 2.

Segregation ratios for ECD 02 × CR 1505 derived F₂ population for resistance to clubroot under greenhouse conditions.

Popl/Fam	Pathotypeφ	Total no. of F2 (Score = no. plants)	Tested ratio	DF	Observed (disease score)1		Test of statistics1		Observed (disease score)2		Test of statistics2
					R (0)	S (1 + 2 + 3)	χ2	Prob	R (0 + 1)	S (2 + 3)	χ2	Prob
Popl#2 Fam 1	3H (SACAN-ss1)	227 (Score 0 = 104) (Score 1 = 26) (Score 2 = 20) (Score 3 = 77)	3R:1S	1	104	123	103.1	<0.00001	130	97	38.1	<0.00001
			1R:3S	1			52.5	<0.00001			126.1	<0.00001
			9R:7S	1			10.0	0.0015			0.1	0.7570*
			7R:9S	1			0.4	0.5306*			16.9	0.00004
			5R:11S	1			22.4	<0.00001			71.5	<0.00001
			11R:5S	1			55.6	<0.00001			13.9	0.0002
			13R:3S	1			187.1	<0.00001			85.7	<0.00001
			3R:13S	1			109.1	<0.00001			221.1	<0.00001
			15R:1S	1			890.2	<0.00001			515.6	<0.00001
			1R:15S	1			606.5	<0.00001			1008.4	<0.00001
			63R:1S	1			4086.8	<0.00001			2501.4	<0.00001
			1R:63S	1			2890.2	<0.00001			4579.9	<0.00001
Popl#2Fam 1	5X(LG-1)	244 (Score 0 = 143) (Score 1 = 35) (Score 2 = 12) (Score 3 = 54)	3R:1S	1	143	101	35.0	<0.00001	178	66	0.5	0.4598*
			1R:3S	1			147.0	<0.00001			299.2	<0.00001
			9R:7S	1			0.6	0.4581*			27.7	<0.00001
			7R:9S	1			21.9	<0.00001			84.5	<0.00001
			5R:11S	1			85.0	<0.00001			197.5	<0.00001
			11R:5S	1			11.7	0.0006			2.0	0.1569*
			13R:3S	1			82.1	<0.00001			11.0	0.0009
			3R:13S	1			254.4	<0.00001			470.5	<0.00001
			15R:1S	1			514.3	<0.00001			180.1	<0.00001
			1R:15S	1			1141.5	<0.00001			1852.7	<0.00001
			63R:1S	1			2516.8	<0.00001			1030.5	<0.00001
			1R:63S	1			5162.1	<0.00001			8084.7	<0.00001
Popl#2Fam 1	5G(CDCS)	239 (Score 0 = 137) (Score 1 = 25) (Score 2 = 16) (Score 3 = 61)	3R:1S	1	137	102	39.8	<0.00001	162	77	6.6	0.0010
			1R:3S	1			133.2	<0.00001			233.3	<0.00001
			9R:7S	1			0.1	0.7383*			12.9	0.0003
			7R:9S	1			17.9	<0.00001			56.1	<0.00001
			5R:11S	1			75.6	<0.00001			148.5	<0.00001
			11R:5S	1			14.5	0.0001			0.1	0.7469*
			13R:3S	1			89.8	<0.00001			28.5	<0.00001
			3R:13S	1			233.4	<0.00001			377.2	<0.00001
			15R:1S	1			541.3	<0.00001			275.0	<0.00001
			1R:15S	1			1063.9	<0.00001			1544.4	<0.00001
			63R:1S	1			2626.8	<0.00001			1460.2	<0.00001
			1R:63S	1			4831.2	<0.00001			6813.9	<0.00001

*Observed segregation ratio not significantly different from the tested ratio at P ≤ 0.05. ^ϕPathotype 3H (SACAN-ss1) is a single spore isolate (Xue et al., 2008) while isolates represented by pathotypes 5X (LG-1) and 5G (CDCS) are field isolates (Strelkov et al., 2016, 2018). ¹Plants with disease score = 0 as R and those with disease scores 1, 2 and 3 as S. ²Plants with disease scores = 0 and 1 as R and those with disease scores 2 and 3 as S.