63
but, in general, tended to be low (mean heritability and mean additive genetic
coefficient of variation of all populations for all variables: h
2
= 0.20 and CV A = 14.65).
CV A is a proxy for evolvability (Houle 1992), namely, the ability of an organism to
evolve, chiefly to adapt. Therefore, in general, the analysed populations have a low
Table 3.1 Genetic variation of Argentinean Nothofagus alpina populations in quantitative traits
measured in two trials (see description above) (from Duboscq-Carra et al. (2018) and DuboscqCarra (2019))
Trait
Mean (SD)
Mean h
2 (SE) CV A
Q ST
Trial 1. 41° 7′ 21.17″ S, 71°14′ 56.95″ W; 795 m asl; 7 pops; 74 OP fam; 592 seedlings
Shoot height (cm)
54 (1.2)
0.27 (0.12)
7.11
0.47
Collar diameter (mm)
2.04 (0.51)
0.26 (0.12)
9.66
0.35
Root length (cm)
29.8 (8.8)
0.13 (0.06)
7.07
0.30
Stem dry biomass (g)
0.091 (0.05)
0.25 (0.12)
20.52 0.36
Root dry biomass (g)
0.351 (0.24)
0.19 (0.01)
21.91 0.37
R/S
3.77 (1.37)
0.20 (0.10)
14.27 –
Specific root length
1.24 (0.90)
0.16 (0.07)
20.5
0.63
Root/aboveground
1.62 (0.58)
0.17 (0.09)
16.12 0.43
Trial 2. 41° 59′ 53″ S; 71° 31′ 34″ W; 408 m asl; 8 pops; 86 OP fam; 1290 trees
Height 4th year (cm)
154.7 (59.5)
0.20 (0.10)
14.4
–
Height 6th year (cm)
272.4 (78.4)
0.11 (0.07)
6.3
–
Collar diam. 4th year (mm)
16.76 (6.93)
0.18 (0.09)
13.4
–
Collar diam. 6th year (mm)
31.80 (9.81)
0.08 (0.06)
5.3
–
Daily height growth 4th year (cm)
0.24 (0.33)
<0.01 (0.02)
4.9
–
Daily diam. growth 4th year (mm)
0.028 (0.041) <0.01 (0.02)
1.5
Height growth initiation 4th year (DOY)
278 (14)
0.13 (0.07)
1.2
0.15
Height growth initiation 5th year (DOY)
301 (12)
0.19 (0.10)
1.0
0.17
Height growth cessation 4th year (DOY)
353 (24)
0.14 (0.09)
2.2
–
Height growth cessation 5th year (DOY)
362 (21)
0.11 (0.07)
1.3
0.09
Marcescent leaves 4th year (%)
44.87
0.38 (0.18)
–
–
Marcescent leaves 6th year (%)
47.24
0.22 (0.11
–
–
Bud burst (DOY)
287.4 (8.4)
0.60 (0.20)
1.9
0.15
Leaf neoformation initiation (DOY)
335.6 (13.7)
0.10 (0.08)
0.9
–
Senescence initiation (DOY)
426.0 (14.7)
0.13 (0.08)
7.6
–
Leaves duration (days)
185.2 (26.8)
0.08 (0.06)
2.7
–
Specific area of preformed leaves (cm
2 /g)
112.5 (15.3)
0.25 (0.15)
5.6
0.07
Length/width ratio of preformed leaves
2.29 (0.35)
0.22 (0.13)
6.6
0.09
Stomatal density of pref. leaves (n/mm
2 )
250.1 (60.4)
0.21 (0.03)
7.9
–
Specific area of neoformed leaves (cm
2 /g)
112.4 (12.8)
0.42 (0.21)
5.2
1.00
Length/width ratio of neoformed leaves
1.81 (0.26)
0.32 (0.20)
6.9
–
Stomatal density of neoformed leaves (n/mm
2 ) 290.9 (84.8)
0.44 (0.07)
16.9
–
Photosynthetic ratio (mmol CO
2
/m
2 seg)
3.05 (2.89)
0.25 (0.16)
32.95 –
Transpiration ratio (mmol H 2 O/m
2 seg)
0.55 (0.47)
0.19 (0.15)
44.77 –
Mean values (standard deviation), mean narrow sense heritability (standard error), additive genetic
coefficient of variation and quantitative differentiation
3 Raulí (Nothofagus alpina = N. nervosa): The Best Quality Hardwood in Patagonia
but, in general, tended to be low (mean heritability and mean additive genetic
coefficient of variation of all populations for all variables: h
2
= 0.20 and CV A = 14.65).
CV A is a proxy for evolvability (Houle 1992), namely, the ability of an organism to
evolve, chiefly to adapt. Therefore, in general, the analysed populations have a low
Table 3.1 Genetic variation of Argentinean Nothofagus alpina populations in quantitative traits
measured in two trials (see description above) (from Duboscq-Carra et al. (2018) and DuboscqCarra (2019))
Trait
Mean (SD)
Mean h
2 (SE) CV A
Q ST
Trial 1. 41° 7′ 21.17″ S, 71°14′ 56.95″ W; 795 m asl; 7 pops; 74 OP fam; 592 seedlings
Shoot height (cm)
54 (1.2)
0.27 (0.12)
7.11
0.47
Collar diameter (mm)
2.04 (0.51)
0.26 (0.12)
9.66
0.35
Root length (cm)
29.8 (8.8)
0.13 (0.06)
7.07
0.30
Stem dry biomass (g)
0.091 (0.05)
0.25 (0.12)
20.52 0.36
Root dry biomass (g)
0.351 (0.24)
0.19 (0.01)
21.91 0.37
R/S
3.77 (1.37)
0.20 (0.10)
14.27 –
Specific root length
1.24 (0.90)
0.16 (0.07)
20.5
0.63
Root/aboveground
1.62 (0.58)
0.17 (0.09)
16.12 0.43
Trial 2. 41° 59′ 53″ S; 71° 31′ 34″ W; 408 m asl; 8 pops; 86 OP fam; 1290 trees
Height 4th year (cm)
154.7 (59.5)
0.20 (0.10)
14.4
–
Height 6th year (cm)
272.4 (78.4)
0.11 (0.07)
6.3
–
Collar diam. 4th year (mm)
16.76 (6.93)
0.18 (0.09)
13.4
–
Collar diam. 6th year (mm)
31.80 (9.81)
0.08 (0.06)
5.3
–
Daily height growth 4th year (cm)
0.24 (0.33)
<0.01 (0.02)
4.9
–
Daily diam. growth 4th year (mm)
0.028 (0.041) <0.01 (0.02)
1.5
Height growth initiation 4th year (DOY)
278 (14)
0.13 (0.07)
1.2
0.15
Height growth initiation 5th year (DOY)
301 (12)
0.19 (0.10)
1.0
0.17
Height growth cessation 4th year (DOY)
353 (24)
0.14 (0.09)
2.2
–
Height growth cessation 5th year (DOY)
362 (21)
0.11 (0.07)
1.3
0.09
Marcescent leaves 4th year (%)
44.87
0.38 (0.18)
–
–
Marcescent leaves 6th year (%)
47.24
0.22 (0.11
–
–
Bud burst (DOY)
287.4 (8.4)
0.60 (0.20)
1.9
0.15
Leaf neoformation initiation (DOY)
335.6 (13.7)
0.10 (0.08)
0.9
–
Senescence initiation (DOY)
426.0 (14.7)
0.13 (0.08)
7.6
–
Leaves duration (days)
185.2 (26.8)
0.08 (0.06)
2.7
–
Specific area of preformed leaves (cm
2 /g)
112.5 (15.3)
0.25 (0.15)
5.6
0.07
Length/width ratio of preformed leaves
2.29 (0.35)
0.22 (0.13)
6.6
0.09
Stomatal density of pref. leaves (n/mm
2 )
250.1 (60.4)
0.21 (0.03)
7.9
–
Specific area of neoformed leaves (cm
2 /g)
112.4 (12.8)
0.42 (0.21)
5.2
1.00
Length/width ratio of neoformed leaves
1.81 (0.26)
0.32 (0.20)
6.9
–
Stomatal density of neoformed leaves (n/mm
2 ) 290.9 (84.8)
0.44 (0.07)
16.9
–
Photosynthetic ratio (mmol CO
2
/m
2 seg)
3.05 (2.89)
0.25 (0.16)
32.95 –
Transpiration ratio (mmol H 2 O/m
2 seg)
0.55 (0.47)
0.19 (0.15)
44.77 –
Mean values (standard deviation), mean narrow sense heritability (standard error), additive genetic
coefficient of variation and quantitative differentiation
3 Raulí (Nothofagus alpina = N. nervosa): The Best Quality Hardwood in Patagonia