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Oxygen Diffusion from the Roots of Woody Species
Author(s) -
Armstrong W.
Publication year - 1968
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1968.tb07279.x
Subject(s) - cutting , shoot , botany , willow , biology , alnus glutinosa , woody plant , horticulture , alder
Application of the‘polarographic’ technique for studying oxygen diffusion from roots has provided preliminary results which establish that oxygen passes through the woody species Salix atrocinerea Brot., Salix fragilis L., Salix repens L., and Myrica gale L., in the gaseous phase as it does in other wetland species. Entry into the shoots occurs through the bark directly above the water table and in the willow cuttings the effective length of shoot for gas intake was the basal three centimetres above the water table. The length of shoot involved was longer in Myrica gale and the roots were of the normal (un‐nodulated) type. Trials on Alnus glutinosa (L.) Gaertn. provided no conclusive results and it is thought that this was perhaps because measurements were on nodulated roots only.