Actual Data versus NEWGARDEN: American Chestnut - Genetic Diversity in Establishing Plant Populations: Founder Number and Geometry - page 268

10000

a

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9000 c, d

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A

8000

7000

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6000

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e, f

5000

4000

b

3000

2000

1000

0

0 20 40 60 80 100

1.00

c and e

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0.99

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0.98

e, f

0.97

c, d

d and f

0.96

B

0.95

0.94

0 20 40 60 80 100

GENERATION

Fig. 16.4 Population growth (A) and changes in observed heterozygosity (B) through
generations of trials simulating a perennial woody species such as the American chestnut.
The full conditions for these trials are given in the text (see description of basic trial a). All
populations have 172 founders. Trials differ as follows (the differences are illustrated by the
squares to the right of the graphs):
In trial a, the 172 founders are divided into four groups, each group inset diagonally from
one of the corners by 80 units.
In trial b, founders are divided into four groups, each group inset diagonally from one of the
corners by 600 units.
In trial c, founders are placed in one large square at the center of the preserve.
In trial d, founders are placed in one large square inset from the borders of the preserve lower
left corner by approximately 600 units.
Trial e is exactly like trial c except that (1) more offspring were deposited nearer the carpellate
parent and there was a longer offspring dispersal tail and (2) all pollen dispersal distance
categories were the same, except for the most distant category, which was extended from a
maximum of 300 to a maximum of 700 units (there is a more distant tail of potential pollen
contribution).
Trial f was exactly like trial d except that (1) more offspring were deposited nearer the
carpellate parent and there was a longer offspring dispersal tail and (2) all pollen dispersal
distance categories were the same, except for the most distant category, which was extended
from a maximum of 300 to a maximum of 700 units (there is a more distant tail of potential
pollen contribution).