Carrot injury and yield response to ozone

Journal Article · Mon Nov 01 00:00:00 EST 1976 · J. Am. Soc. Hortic. Sci.; (United States)

OSTI ID:6194270

Bennett, J P; Oshima, R J

Container-grown plants of carrot (Daucus carota L.) exposed intermittently to 0.19 or 0.25 ppm ozone throughout their growth increased in plant height and total number of leaves in spite of the development of chlorotic leaves. Leaf dry weight was unaffected by ozone, but root dry matter decreased 32 to 46%. As a result, the root weight/total dry weight ration and root/shoot ratio declined significantly in the presence of ozone. A regression of root dry weight on chlorotic lead dry weight explained 35% of the root loss and predicted that 1.5 g of root tissue is lost for every g of chlorotic leaf dry weight casued by ozone injury.

• Research Organization: Univ. of California, Davis
• OSTI ID: 6194270
• Journal Information: J. Am. Soc. Hortic. Sci.; (United States), Vol. 101:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
OZONE
BIOLOGICAL EFFECTS
PLANTS
PLANT GROWTH
CARROTS
INJURIES
FOOD
GROWTH
VEGETABLES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)