Soil Temperature Influences on Root Resistance of Pinus contorta Seedlings | Zendy

Steven W. Running | Zendy; C. Patrick Reid | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Soil Temperature Influences on Root Resistance of Pinus contorta Seedlings

Author(s) -

Steven W. Running,

C. Patrick Reid

Publication year - 1980

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.65.4.635

Subject(s) - pinus contorta , arrhenius plot , resistance (ecology) , botany , chemistry , tritiated water , stomatal conductance , horticulture , water potential , root system , soil water , biology , agronomy , ecology , photosynthesis , tritium , activation energy , physics , organic chemistry , nuclear physics

The influence of low temperature in the root zone on water uptake in lodgepole pine (Pinus contorta Dougl. ex Loud.) was studied under laboratory conditions. To remove soil hydraulic influences, two-year-old seedlings were transferred to solution cultures and maintained in temperature controlled water baths. Short term measurements of leaf conductance, leaf water potential and tritiated water movement were taken at root temperatures from 22 C down to 0 C. Root resistance was calculated to be 67% of total plant resistance at 7 C and 93% at 0 C. In addition an Arrhenius break was found in a plant resistance versus temperature plot, suggesting a significant change with temperature in the membrane pathway in the root water uptake system.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research