Table 2.
Average and maximum ethylene production of Suillus tomentosus tuberculate ectomycorrhizae (TEM) at three sites within the Sub Boreal Pine Spruce xeric cold biogeoclimatic zone for spring and summer 1997 and summer 1998
| Season/year | Site/stand class | Average TEM activity* (nmol C2H4 g−1 24 h−1) (± s.e.) | Maximum TEM activity† (nmol C2H4 g−1 24 h−1) |
|---|---|---|---|
| Spring 1997 | AG 2 | 242·9 (138·5) | 724·5 |
| PL 2 | 199·1 (94·4) | 504·0 | |
| NL 2 | 129·0 (72·3) | 328·4 | |
| AG 8 | N/A | N/A | |
| PL 8 | 75·8 (45·5) | 222·5 | |
| NL 8 | 32·9 (14·7) | 75·8 | |
| Summer 1997 | AG 2 | 1623·4 (457·3) | 2580·8 |
| PL 2 | 1143·1 (306·3) | 2082·9 | |
| NL 2 | 292·0 (181·6) | 977·3 | |
| AG 8 | N/A | N/A | |
| PL 8 | 461·5 (147·1) | 1032·1 | |
| NL 8 | 237·9 (118·3) | 676·0 | |
| Summer 1998 | AG 2 | 4725·5 (3970·1) | 20577·0 |
| PL 2 | 5696·7 (4859·1) | 25098·8 | |
| NL 2 | 564·5 (181·1) | 1033·0 | |
| AG 8 | N/A | N/A | |
| PL 8 | 413·9 (150·4) | 842·8 | |
| NL 8 | 129·7 (90·7) | 483·7 |
AG, Alex Graham mountain; PL, Puntzi Lake; NP, Nimpo Lake. s.e., standard error, n = 5 for each average.
* Averages based on five root systems in each stand.
† Maximum measured from one root system.