Ozone damage to wheat varieties at anthesis

Journal Article · · Crops Soils; (United States)

OSTI ID:6297361

Shannon, J G; Mulchi, C L

Two wheat (Triticum aestivum L.) cultivars, Arthur 71 and Blueboy, were exposed to 0.2 ppm ozone at anthesis for 4 hours/day for a week in a growth chamber. Yields were reduced by about 30 and 23% for Arthur 71 and Blueboy, respectively. However, the reduction for Blueboy was not statistically significant. Reductions in seed per plant and seed per head were not significantly different in the ozone treatment as compared to the controls. Cultivars did not always respond in the same way to ozone for the characteristics studied. Ozone only slightly reduced kernel weight in Blueboy as compared to a significant, 17.4% reduction for Arthur 71; however, seed set was significantly reduced by 22.1% in Blueboy compared to 8.3% for Arthur 71. Since the ozone levels used in this experiment are often attained in fields near urban areas, the responses to ozone for wheat yield and yield components for the varieties studied should be comparable to actual field conditions. 12 references, 1 table.

• Research Organization: Univ. of Maryland, College Park
• OSTI ID: 6297361
• Journal Information: Crops Soils; (United States), Journal Name: Crops Soils; (United States) Vol. 14; ISSN CRSOA
• 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
CEREALS
DAMAGE
DOSE-RESPONSE RELATIONSHIPS
GRASS
INHIBITION
OZONE
PLANTS
PRODUCTIVITY
SEEDS
WHEAT