Table 1.

Genomic features of the studied plants

Monocots	Genome size (Mbp)^a	Sub-genome size (Mbp)	Ploidy level	Percent protein database matches	Relative gene density^b	Gene number per sub-genome	Genes per genome
Rice	400	400	2×	8.39	1	NA	41,000
Sorghum	750	750	2×	3.64	0.43	NA	33,400
Maize	2670	2670	2×	1.23	0.15	NA	40,300
Wild wheat	4000	4000	2×	0.67	0.08	NA	32,800
Barley	5400	5400	2×	0.51	0.06	NA	33,600
Bread wheat	16,800	5600	6×	1.44	0.17	98,640	295,900
Dicots
Arabidopsis	135	135	2×	22.22	1	NA	26,300
Soybean	1100	550	4×	6.03	0.27	29,110	58,200
Oilseed rape	1100	550	4×	6.78	0.30	32,720	65,400
Cabbage	760	760	2×	8.49	0.38	NA	56,600
Potato	2000	1000	4×	4.27	0.19	37,450	74,900
Tomato	1000	1000	2×	2.84	0.13	NA	24,900
Cotton	3000	1500	4×	4.07	0.18	53,550	107,100
Non-Angiosperms
Moss	380	380	2×	4.44	0.53	NA	20,600
Fern	9000	9000	2×	0.49	0.06	NA	42,300
Pine	21,600	21,600	2×	0.85	0.10	NA	224,300

↵a Genome sizes were taken from the Plant DNA C-values Database, Royal Botanic Gardens, Kew, UK (http://www.rbgkew.org.uk/cva1/database1.html), except for wild wheat (Li et al. 2004), fern (J. Banks, pers. comm.), Arabidopsis (http://www.arabidopsis.org; Round et al. 1997), and rice (http://www.rgp.dna.affrc.go.jp/cgi-bin/statusdb/irgsp-status.cgi). (NA) not applicable
↵b The relative gene density per genome or sub-genome was calculated relative to rice in monocots and non-angiosperms, and relative to Arabidopsis in dicots

Differential methylation of genes and repeats in land plants