Genetic analysis of loose smut (Ustilago tritici) resistance in Sonop spring wheat

BMC Plant Biology

Table 2 Additive effect QTL identified for resistance to loose smut (Ustilago tritici) in the Diamont/TD-14 DH population

QTL designation	Race - location combinations	Chr^c	IM^a				ICIM^b
QTL designation	Race - location combinations	Chr^c	Pos^d	LOD^e,f	PVE^g	Add^h	Pos	LOD	PVE	Add
Loose Smut Incidence (LSI)
*QUt.mrc-3B*	T9_Swift	3B.1	78.0	4.21	5.64	12.19	76.2	3.92	2.61	5.82
	T9_Mean	3B.1	78.0	3.86	5.31	9.98
	T39_Swift	3B.1	76.8	3.03	4.21	11.31
	T39_Mean	3B.1	76.8	3.56	4.80	10.11
*QUt.mrc-4B*	T9_Swift	4B					69.3	3.26	2.14	−5.32
	T9_Mean	4B					69.9	3.81	3.09	−5.51
	T39_Mean	4B					61.3	2.51	1.48	−4.08
*QUt.mrc-5B*	T2_Morden	5B.1					19.8	5.74	3.78	6.07
	T2_Swift	5B.1					22.2	8.39	2.26	6.21
	T2_Mean	5B.1					19.8	7.89	2.74	5.92
	T9_Morden	5B.1	20.1	26.31	36.72	20.77	19.8	26.52	52.48	20.07
	T9_Swift	5B.1	20.4	41.89	35.16	30.39	20.4	50.53	68.61	29.74
	T9_Mean	5B.1	20.4	40.99	35.52	25.79	20.3	44.49	67.78	25.59
	T39_Morden	5B.1	19.8	26.75	23.78	21.09	19.8	27.61	54.16	20.29
	T39_Swift	5B.1	20.4	65.25	43.31	36.21	20.4	44.28	81.31	23.04
	T39_Mean	5B.1	20.4	52.12	38.74	28.65	20.4	56.05	76.44	28.79
*QUt.mrc-7B*	T2_Morden	7B	0.0	49.58	75.42	27.39	0.0	53.46	75.69	27.13
	T2_Swift	7B	0.0	78.71	89.24	39.33	0.0	86.49	88.89	38.93
	T2_Mean	7B	0.0	70.85	86.49	33.45	0.0	77.28	86.47	33.19
Fully Smutted Index (FSI)
*QUtp.mrc-5B*	T2_Swift	5B.1	20.4	37.83	64.25	44.39	20.4	37.83	85.22	44.39
	T2_Pooled	5B.1	20.4	32.19	55.70	42.61	20.4	32.19	81.69	42.61
	T9_Morden	5B.1	21.0	55.94	78.29	42.87	21.0	58.48	88.16	43.16
	T9_Swift	5B.1	21.0	59.31	63.95	45.59	21.0	59.31	91.29	45.59
	T9_Pooled	5B.1	21.0	74.96	94.11	44.40	21.0	77.31	94.10	44.35
	T39_Morden	5B.1	21.0	24.78	69.18	32.34	21.0	24.78	69.18	32.34
	T39_Swift	5B.1	21.0	36.11	64.50	43.55	21.0	54.90	38.05	43.41
	T39_Pooled	5B.1	21.0	36.80	82.00	36.32	21.0	36.80	82.00	36.32

^aIM interval mapping, ^bICIM inclusive composite interval mapping, ^cChr chromosome, ^dPos position in cM, ^eLOD peak LOD score, ^fLOD threshold for declaring significant QTL was 3.2, ^gPVE phenotypic variation explained (r², %), ^hAdd additive effect of allele substitution. Positive number indicates that TD-14 contributed the resistance allele

ISSN: 1471-2229