Summary:
Published in Canadian Journal of Forest Research
Development of the Laccaria bicolor (Maire) Orton basidiome in association with container-grown Pinus strobus L. seedlings was influenced by photosynthetic photon flux densities (PPFD). Three growth patterns were observed. At a PPFD of 330 µmol.m-2 .s-1, basidiome growth was rapid, and complete development was achieved after 16 days. At a very low PPFD (20 µmol.m-2 .s-1), the basidiome development ceased, although some residual growth was observed for a few days. At an intermediate PPFD (50 and 90 µmol.m-2 .s-1), basidiome growth was less rapid than that observed at 330 µmol.m-2 .s-1. Significant differences in the net photosynthesis of the host plant resulted in corresponding changes in basidiome biomass. The effect of basidiome removal on the photosynthetic response of the host plant was evaluated at three stages of basidiome development (2- to 4-, 6- to 8-, and 10- to 15-mm pileus diameter). At each developmental stage, removal of the basidiome induced a very rapid decrease in both net photosynthesis and stomatal conductance of the host plant. This decrease in net photosynthesis indicates that the growth and development of the basidiome are dependent on the host plant's current rate of net photosynthesis.
Sector(s):
Forests
Catégorie(s):
Scientific Article
Theme(s):
Forestry Research, Forests, Seeds and Forest Seedlings Production
Departmental author(s):
Author(s):
LAMHAMEDI, Mohammed S., Christian GODBOUT et Jacques-André FORTIN
Year of publication:
1994
Format:
Paper
How to get the publication:
Keyword(s):
instensité de lumière, développement du carpophore, photosynthèse nette, pin blanc, production de plants, production de semences et de plants, Pinus strobus, Laccaria bicolor, seeds and forest seedlings production, Eastern white pine, light intensity, basidiome development, net photosynthesis