Summary:
Published in Canadian Journal of Botany 69: 1927-1934
The ability of 28 monokaryons and 78 reconstituted dikaryons of Pisolithus sp. from South Africa to form mycelial strands in association with Pinus pinaster was tested under aseptic and non-aseptic conditions. All monokaryotic and some dikaryotic cultures failed to form mycelial strands either on agar medium or in growth pouches. The remaining dikaryotic cultures showed wide genetic variation in the development of mycelial strands and in the extension of their extramatrical phase. The exploration of the surrounding environment by the extramatrical phase from synthesized Pinus pinaster — dikaryotic cultures of the Pisolithus sp. depended largely upon the type of medium used, being more extensive in soil than on nutrient agar medium. Microscopic observation showed that mycelial strands were formed by aggregations of hyphae. Large central hyphae with disorganized cytoplasm were observed in some strands. The results are discussed in relation to nutrient and water absorption.
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. and Jacques-André FORTIN
Year of publication:
1991
Format:
Paper
How to get the publication:
Keyword(s):
Pisolithus sp., Pinus pinaster, maritime pine, genetic, extramatrical phase, mycelial strands, production de plants, production de semences et de plants, seeds and forest seedlings production, génétique, phase extramatricielle, cordons myceliens, pin maritime