Suonenjoki Research Station, Finnish Forest Research Institute, 77600 Suonenjoki, Finland.
Mycorrhizas and drought resistance of Picea sitchensis (Bong.) Carr
II. In conditions of adequate nutrition
Article first published online: 28 APR 2006
Volume 122, Issue 4, pages 669–673, December 1992
How to Cite
LEHTO, T. (1992), Mycorrhizas and drought resistance of Picea sitchensis (Bong.) Carr. New Phytologist, 122: 669–673. doi: 10.1111/j.1469-8137.1992.tb00095.x
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- (Received 2 August 1991; accepted 29 July 1992)
- water relations;
- mineral nutrition
Mycorrhizal [Paxillus involutus (Batsch) Fr.] and non–mycorrhizal Sitka spruce [Picea sitchensis (Bong.) Carr.] seedlings were grown to comparable size and with comparable shoot N, P and K concentrations in a perlite nutrient solution culture. Shoot water potentials of mycorrhizal and non–mycorrhizal seedlings were related to the moisture content of the substrate during a drying cycle. At any given substrate moisture content, mycorrhizal plants had significantly lower water potentials than non–mycorrhizal plants, the difference being about O.l MPa. In a factorial experiment there was no effect of mycorrhizal infection on stomatal conductance or net photosynthetic rate in either well–watered or droughted seedlings.