Physiological and biochemical response of sensitive and tolerant Pinus strobus L. clones to fumigation with low concentrations of sulfur dioxide

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6167761

Eckert, R T

Sixty-seven pairs of air pollution sensitive and tolerant eastern white pine ortets were selected in plantations near Columbus and Zanesville, Ohio. Soil nutrient levels were uniform for all ortets but foliar Ca level was significantly lower in sensitive ortets. During the spring of 1976, scion material was used to produce 60 sensitive and 60 tolerant clones. When needles were 20-40 mm in length, clones were fumigated for 2 hr with 4-5 pphm SO/sub 2/. Initial evaluations of photosynthetic response were also done at this time. Inhibition of photosynthesis in sensitive clones was much greater than in tolerant clones. Regression analysis of mean rates detected significant (p less than or equal to 0.050) depression in tolerant clones as well as in sensitive clones. In both sensitive and tolerant classes, and in rootstock material, fumigated needles were shorter than control needles. The results of photosynthetic studies and analysis of needle lengths strongly suggest that substantial loss of production may occur in apparently tolerant white pine, as well as in sensitive white pine. 101 references, 4 figure, 37 tables.

• Research Organization: Ohio State Univ., Columbus (USA)
• OSTI ID: 6167761
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CHALCOGENIDES
CHRONIC EXPOSURE
CLONING
COMPARATIVE EVALUATIONS
CONIFERS
GROWTH
LEAVES
OXIDES
OXYGEN COMPOUNDS
PINES
PLANT GROWTH
PLANTS
SENSITIVITY
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOLERANCE
TREES