QTL mapping in white spruce: gene maps and genomic regions underlying adaptive traits across pedigrees, years and environments

Table 2 Proportion of the total phenotypic variance explained by each principal component (PC1, PC2 and PC3) retained for the timings of bud flush and bud set.

Traits and sites^a	Mapping population^b	Year	Proportion of total variance (range of phenology stages^c)
			PC1		PC2		PC3
Bud flush
VES	P	2004	65.4	(4.4-4.6)	9.9	(3.6-4.0)	-
		2005	50.1	(3.9-4.9)	12.9	(2.0-2.7)	-
	D	2006	62.3	(0.4-2.3)	13.6	(3.4-5.2)	-
		2007	56.9	(1.4-3.5)	12.8	(4.2-5.7)	-
AAFC	P	2004	-	-	-	-	-
		2005	-	-	-	-	-
	D	2006	66.8	(1.6-3.4)	12.5	(4.3-5.8)	-
		2007	73.5	(3.8-5.0)	10.9	(1.1-2.5)	-
Bud set
VES	P	2004	73.4	(3.9-4.7)	14.3	(3.3-3.9)	-
		2005	64.4	(4.3-4.5)	13.7	(1.7)	-
	D	2006	73.9	(3.1-4.3)	-		-
		2007	66.7	(3.7-4.7)	11.9	(1.9-3.0)	6.4	(1.9-2.5)
AAFC	P	2005	45.8	(4.0-4.7)	34.1	(2.1)	-
	D	2006	80.9	(3.4-4.7)	-		-
		2007	64.0	(0.7-3.6)	-		-

^a AAFC, indoor controlled conditions at Agriculture and Agri-Food Canada; VES, natural outdoor conditions at Valcartier Experimental Station.
^b P, first mapping population (cross C96-1-2856); D, second mapping population (cross C94-1-2516).
^c corresponds to the range of bud phenology stages explained by each principal component (indeed, PCA were performed from means of stages of three blocks for each environmental condition).

ISSN: 1471-2164