Genetic diversity of arsenic accumulation in rice and QTL analysis of methylated arsenic in rice grains

Rice

Table 1 Two-way ANOVA of As species in brown rice of WRC cultivars grown over a 3-year period in a paddy field under flooded conditions

As species	Variation	SS	df	MS	F	P	SSE/SST^a (%)
Total As	G	0.4980	57	0.0087	56.72	<0.0001	35.1
	Y	0.6771	2	0.3386	2197.9	<0.0001	47.8
	G x Y	0.2160	114	0.0019	12.3	<0.0001	15.2
	Error	0.0268	174	0.0002
iAs	G	0.3641	57	0.0064	139.00	<0.0001	42.0
	Y	0.3113	2	0.1556	3387.4	<0.0001	36.0
	G x Y	0.1824	114	0.0016	34.83	<0.0001	21.1
	Error	0.0080	174	0.0000
DMA	G	0.0245	57	0.0004	74.93	<0.0001	62.3
	Y	0.0028	2	0.0014	247.7	<0.0001	7.2
	G x Y	0.0110	114	0.0001	16.77	<0.0001	27.9
	Error	0.0010	174	0.0000

Total As, total arsenic of grains; iAs, sum of As (III) and As (V); mAs, dimethylarsinic acid; G, Genotype; Y, year; G × Y, genotype-by-year interaction.
^a Sum of squares (SS) of each effect by total SS.