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. 2011 Sep 2;157(3):998–1014. doi: 10.1104/pp.111.181594

Table I. Heritability of enzyme activity traits in the S. pennellii IL population.

The coefficient of variation (CV) in percentage within and among the lines as well as the heritability (H2) for each enzyme activity trait are presented for the two independent field trials, 2003 and 2004. For each trait, the mean-average CV (ØCV) exhibits the average of CV values obtained for each IL; the CV among lines was computed using the mean enzyme activities among the lines. The columns Ø and CV show average heritability and the corresponding CV, respectively. The class (CL) column exhibits a grouping of the average H2 values as follows: ↑, high heritability; ↓, low (H2 ≤ 20); ↔, intermediate (20 < H2 ≤ 40); high (H2 > 40). Pearson’s (r) and Spearman’s (rs) correlation and the significance (* P < 0.05, ** P < 0.01) of enzyme activity levels in the ILs between the two field trials are also displayed.

Enzymes IL 2003
 IL 2004
 H2
 Correlation
ØCV (Within) CV (Among) H2 ØCV (Within) CV (Among) H2 Ø CV CL r rs
ShkDH 34 37 41 49 35 18 29.5 54 ↔ 0.42** 0.27*
AspAT 42 24 1 41 30 19 10 123 ↓ 0.17 0.24*
AlaAT 37 31 30 59 42 13 21.4 58 ↔ 0.02 0.18
NAD-GlDH 55 48 31 65 47 17 24.1 41 ↔ 0.1 0.05
NAD-GAPDH 29 26 32 35 27 27 29.7 12 ↔ 0.5** 0.41**
TPI 40 30 22 41 27 14 17.9 32 ↓ 0.27* 0.32**
G6PDH 49 38 22 51 34 12 16.9 42 ↓ 0.04 0.14
PGK 60 30 0 46 24 3 1.4 141 ↓ 0.02 −0.03
PEPC 60 46 16 55 32 7 11.4 51 ↓ 0.02 0.04
PPi-PFK 37 36 34 56 47 32 32.9 5 ↔ 0.31** 0.42**
NADP-GAPDH 46 26 0 52 35 10 5 141 ↓ 0.12 0.12
Aldolase 62 42 7 54 39 0 3.3 141 ↓ 0.03 −0.08
PK 28 29 32 51 32 7 19.6 91 ↓ 0.19 0.18
ATP-PFK 44 33 18 47 36 21 19.5 10 ↓ 0.32** 0.24*
GlcK 71 44 10 60 40 12 11.1 8 ↓ 0.16 0.1
PGM 26 25 36 36 28 21 28.5 39 ↔ 0.01 0.15
PGI 28 24 30 34 21 13 21.4 56 ↔ 0.34** 0.24*
SuSy 56 34 0 56 40 17 8.3 141 ↓ 0.01 −0.04
UGP 23 24 42 20 17 36 38.7 10 ↔ 0.32** 0.41**
Invertase 57 41 20 48 37 21 20.2 3 ↔ 0.29* 0.34**
FruK 55 33 2 60 37 4 2.8 51 ↓ 0.27* 0.13
SPS 37 24 10 29 21 19 14.5 44 ↓ 0.25* 0.3**
AGP 71 72 13 62 40 0 6.6 141 ↓ 0.07 0.08
Aconitase 41 35 26 60 46 11 18.7 56 ↓ 0.05 0.09
NAD-MDH 44 35 18 44 37 25 21.9 23 ↔ 0.37** 0.33**
Fumarase 58 42 9 61 29 0 4.7 141 ↓ 0.15 0.06
NADP-IcDH 63 49 7 65 49 21 13.8 69 ↓ 0.11 0.14
SCS 71 58 3 67 68 0 1.7 141 ↓ 0 0.09
Average 47 36 18 50 36 14 16.3 67 ↓ 0.18 0.18