A high-density transcript linkage map with 1,845 expressed genes positioned by microarray-based Single Feature Polymorphisms (SFP) in Eucalyptus

Table 1 Summary statistics of SFPs selected for linkage mapping using 96 F1 individuals of the E. urophylla × E. grandis pedigree

EST collection from which probes were derived*	Total # probes	SFPs selected after χ² segregation		SFPs selected after z_i normal deviate		SFPs mapped at low ordering support		SFPs mapped on a framework map
		1:1	3:1	1:1	3:1	1:1	3:1	1:1	3:1
Contigs	22,598	6,668	8,139	1,407	1,587	570	434	252	271
E. urophylla	2,071	567	778	132	134	57	40	20	24
E. grandis	10,073	2,445	3,846	496	735	221	134	98	67
E. globulus	3,620	1,044	1,361	216	230	93	62	34	29
E. pellita	2,133	550	835	144	146	65	36	24	12
Mixed species	3,282	874	1197	191	231	80	53	29	24
Total**	43,777 (15,698)	12,148 (7,764)	16,156 (10,364)	2,586 (2,132)	3,063 (2,583)	1,086	759	457	427

*Unigenes derived from a consensus sequence involving ESTs from different species are indicated as contigs, while singletons are listed by species.
**When several probes were selected per probe set, the number of unique genes represented is shown between parentheses.

ISSN: 1471-2164