Genome-wide association analysis and QTL mapping reveal the genetic control of cadmium accumulation in maize leaf

BMC Genomics

Table 2 QTLs detected for leaf Cd accumulation in maize by composite interval mapping

No.	Year	QTL	Chr	Pos (cM)	LOD^a	R² (%)	A	Support region (cM)^b	Physical distance (Mb)^c
1	2015	qLCd2	2	723.65	32.42	41.24	24.22	714.99–728.64	154.02–164.30
1	2016	qLCd2	2	723.01	36.04	38.41	13.25	712.26–730.91	153.76–167.58
2	2016	qLCd5	5	401.08	4.66	3.36	3.91	394.16–415.08	21.30–29.05
3	2015	qLCd7	7	374.39	4.76	3.75	5.97	370.29–378.47	113.68–119.73
4	2015	qLCd8	8	488.31	5.56	4.44	−5.62	468.15–491.48	103.10–105.60
5	2015	qLCd9	9	456.11	4.86	3.84	5.27	447.91–462.47	95.85–98.82
5	2016	qLCd9	9	444.46	5.27	4.29	6.92	442.45–445.18	93.45–95.08

Chr chromosome, Pos position of peak with highest logarithm of odds(LOD), R² explained phenotypic variance, A additive effect of B73 allele
^a after 1000-permutation tests, threshold values of LOD for Cd concentration of leaves was calculated as 3.84
^b the position of support regions which was determined by half LOD at the peak in cM
^c the physical distance (Mb) of the bin makers corresponding to genetic distance

ISSN: 1471-2164