Table 3.

Parameters used to assemble the individual and composite white spruce linkage maps.

Mapping parameters	Individual	maps			Composite map
	Cross P		Cross D
	♀80112	♂80109	♀77111	♂2388
Available markers a	600	671	521	508	1,578 b
Distorted markers c	10	12	15	19	33
Markers without segregation distortion	590	659	506	489	1545
Assigned markers	580	650	486	470	1,342
AFLP loci	256	289	-	-	470
SSR loci	9	10	-	-	12
Gene loci
ESTPs	22	23	20	20	33
SNPs	293	328	466	450	827 d
Total	315	351	486	470	860
Positioned marker loci (%)	549 (94.7)	570 (87.7)	471 (96.9)	454 (96.6)	1,301 (96.9)
AFLP loci	239	235	-	-	453
SSR loci	8	10	-	-	12
Gene loci
ESTPs	19	19	20	20	33
SNPs	283 e	306 f	451	434	803 g
Total	302	325	471	454	836
Major linkage groups (n > 10 markers)	12 (4 h)	12 (1 h)	12	12	12
Minor linkage groups (3 ≤ n ≤ 10 markers)	1	0	0	0	0
Unlinked markers	10	9	20	19	58
Map length GF, cM (Kosambi)	2,163.6	2,276.1	2,055.6	1,700.1	2,086.8
Average map density, cM (Kosambi)	3.9	4.0	4.4	3.7	1.6
Average size for major linkage groups, cM (Kosambi)	143.3	162.6	171.3	141.7	173.9

^a For individual linkage maps, only markers segregating 1:1 or 1:1:1:1 were used.

^b 256 markers were shared between the two crosses.

^c Bonferroni correction: P ≤ 0.01/number of loci.

^d 373 gene loci from Arborea PgLM0 SNP array, 339 from Arborea PgLM1 array, and 115 from Treenomix array.

^e 215 gene loci from Arborea PgLM0 SNP array, and 68 from Treenomix array.

^f 239 gene loci from Arborea PgLM0 SNP array, and 67 from Treenomix array.

^g 370 gene loci from Arborea PgLM0 SNP array, 325 from Arborea PgLM1 array, and 108 from Treenomix array.

^h Number of linkage groups composed of 2 subgroups having more than 10 markers.