Table I.

Summary of LTR-retrotransposon data from this study and from the indicated published data^a

nd, Not determined.

	No. of Intact Elements with TSDs	% Intact with TSDs	% Solo LTRs with TSDs	% Fragmented	No. of Intact Elements Dated	Insertion Date, Mya (Average)	Ts:Tv	(Ts+Tv):Indel
G. maxb	45	55	7	38	45	1.3	2.41	12.81
G. tomentellab	23	52	7	41	22	0.8	2.56	13.7
P. vulgarisb	7	nd	nd	nd	7	0.8	1.89	nd
Arabidopsiscd	nd	30	35	35	87	1.9	nd	nd
Ricece	nd	24	35	41	260	1.3	nd	nd
L. japonicusc	nd	57	10	33	13	0.3	2.5	7.3
M. truncatulac	nd	37	21	42	19	0.2	2.4	3.6
Maizec	nd	61	9	30	47	0.7	3.9	8.2
Barleyc	nd	35	17	48	17	1.3	1.6	12.0
T. monococcumc	nd	50	10	40	30	1.0	1.9	8.7

^aPercentages are relative to total number of elements identified that contain at least a partial LTR sequence with homology to an intact LTR-retrotransposon. Remnants lacking any LTR homology were not included in the calculations used in this table. Ts, Transitions; Tv, transversions; TSD, target site duplication.

^bSummary data taken from Supplemental Tables S2 and S3.

^cData taken from tables 1 and 4 of Vitte and Bennetzen (2006).

^dData taken from table 1 of Devos et al. (2002).

^eData taken from table 2 of Ma et al. (2004).