Figure 1. The transplant design. Genotypes were sourced from 17
populations from across western North America and replicated three times
each in two common gardens located in Clatskanie and Corvallis. In the
winter of 2013-2014, one replicate in Clatskanie and all three
replicates in Corvallis were coppiced aboveground and allowed to regrow
(shown as small trees). Sample tissues collected in January 2017 are
reflected by the purple ovals with the subsequent number of samples
taken of each tissue from each garden indicated.
Figure 2. (A) A principle components analysis (PCA) of the climate over
the past 38 years at each of the genotype’s source locations and the two
common gardens. Dots represent each genotype’s source location in
climate space, colored by latitude, and the two black triangles
represent the common gardens in the climate space. (B-E) The average
minimum and maximum temperatures over the past 38 years in Clatskanie
and Corvallis (boxplots) as compared to the minimum and maximum
temperatures in the year we collected samples (2017, black lines).
Samples were collected in (B,D) Clatskanie on January
5th – January 9th and in (C,E)
Corvallis on January 10th- January
11th. Data is sourced from Daymet (Thornton et al.,
2018).
Figure 3. Plasticity between the two common gardens in the two traits
measured, (A) total NSC stores (TNC) and (B) the proportion of TNC in
starch. Black lines represent the average value across all genotypes,
with error bars indicating one standard deviation from the mean. The
other lines are colored by latitude and each line represents a genotype,
where genotype values were estimated using equation (1).
Figure 4. The relative distance plasticity index (RDPI) of the (A)
proportion of starch to total and (B) total amount of NSC stores plotted
by the latitude of each genotype’s source location. Black dots represent
each genotype’s RDPI and the line fits are shaded gray for one standard
deviation. A larger RDPI indicates that there is a larger percent change
in genotypic trait values between gardens.
Figure 5. (A) Genetic variation in diameter at breast height (DBH) as
compared to (B) genetic variation in total nonstructural carbohydrates
as measured at each common garden.