Table 2.
Relationships between AnC content (nmol cm−2) and attenuance difference D550– D700 in the form [AnC]=k×(D550–D700), for the leaves of five species studied
| Species | N | Chlorophylls (nmol cm−2) | Anthocyanins (nmol cm−2) | k | r2 | RMSEa (nmol cm−2) |
| A. platanoides | 42 | 36.8b; (9.0±8.4)c | 46.2; (20.2±15.3) | 36.96d | 0.94d | 4.09d |
| C. alaunica | 14 | 44.8; (18.1±15.1) | 46.7; (15.9±18.8) | 33.38 | 0.93 | 4.49 |
| C. alba | 27 | 16.8; (4.8±13.8) | 50.8; (17.3±14.3) | 31.03 | 0.91 | 5.37 |
| C. avellana | 15 | 38.8; (28.8±4.3) | 46.5; (17.0±12.4) | 37.17 | 0.91 | 3.76 |
| P. quinquefolia | 34 | 40.1; (5.0±8.4) | 49.8; (22.6±15.8) | 28.30 | 0.87 | 5.89 |
| All | 132 | (28.8±13.8) | (17.3±16.5) | 31.96 | 0.87 | 5.58 |
a
RMSE, root mean square error.
b
The maximal value in the data set.
c
(mean±standard deviation).
d
See also Fig. 6.