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. 2011 Mar 10;12:145. doi: 10.1186/1471-2164-12-145

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 sitesa Mapping
populationb
Year Proportion of total variance (range of phenology stagesc)


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).