Long-term elevation of atmospheric CO2 concentration and the carbon exchange rates of saplings of Pinus taeda L. and Liquidambar styraciflua L.

1988 ◽  
Vol 4 (3) ◽  
pp. 255-262 ◽  
Author(s):  
N. Fetcher ◽  
C. H. Jaeger ◽  
B. R. Strain ◽  
N. Sionit
Keyword(s):  
Exchange Rates ◽  
Pinus Taeda ◽  
Co2 Concentration ◽  
Atmospheric Co2 ◽  
Liquidambar Styraciflua ◽  
Carbon Exchange ◽  
Atmospheric Co2 Concentration ◽  
Pinus Taeda L

ECTOMYCORRHIZAE AND RATE OF WATER DEFICIT DEVELOPMENT INFLUENCE PHOTOSYNTHESIS IN PINUS TAEDA L. SEEDLINGS

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1143G-1143
Author(s):  
Sven E. Svenson ◽  
F. T. Davies
Keyword(s):  
Exchange Rates ◽  
Water Potential ◽  
Pinus Taeda ◽  
Water Deficit ◽  
Ectomycorrhizal Fungus ◽  
Pisolithus Tinctorius ◽  
Carbon Exchange ◽  
Total Water ◽  
Water Deficits ◽  
Pinus Taeda L

Pinus taeda L. seedlings inoculated with the ectomycorrhizal fungus, Pisolithus tinctorius, were grown in a glasshouse for eight months, and then subjected to rapidly developing cyclic water deficits, or to a single slowly developing water deficit. Water deficits developed at a rate of -0.16 MPa per day (predawn total water potential) for five cyclic water deficits, and at -0.04 MPa per day for the slow water deficit. In unstressed seedlings, carbon exchange rates (CER) did not differ between noninoculated and inoculated seedlings. During slow water deficit development, CER steadily declined. During rapid water deficit development, CER remained unchanged, then declined rapidly when water potentials fell below -1.3 MPa. Inoculated seedlings had higher CER when water potential was lower than -1.5 MPa.

scholarly journals ECTOMYCORRHIZAE AND RATE OF WATER DEFICIT DEVELOPMENT INFLUENCE PHOTOSYNTHESIS IN PINUS TAEDA L. SEEDLINGS

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1143g-1143
Author(s):  
Sven E. Svenson ◽  
F. T. Davies
Keyword(s):  
Exchange Rates ◽  
Water Potential ◽  
Pinus Taeda ◽  
Water Deficit ◽  
Ectomycorrhizal Fungus ◽  
Pisolithus Tinctorius ◽  
Carbon Exchange ◽  
Total Water ◽  
Water Deficits ◽  
Pinus Taeda L

Pinus taeda L. seedlings inoculated with the ectomycorrhizal fungus, Pisolithus tinctorius, were grown in a glasshouse for eight months, and then subjected to rapidly developing cyclic water deficits, or to a single slowly developing water deficit. Water deficits developed at a rate of -0.16 MPa per day (predawn total water potential) for five cyclic water deficits, and at -0.04 MPa per day for the slow water deficit. In unstressed seedlings, carbon exchange rates (CER) did not differ between noninoculated and inoculated seedlings. During slow water deficit development, CER steadily declined. During rapid water deficit development, CER remained unchanged, then declined rapidly when water potentials fell below -1.3 MPa. Inoculated seedlings had higher CER when water potential was lower than -1.5 MPa.

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