genetic abnormalities (  ) on burley tobacco (Nicotiana tabacum (burley type)) - 1440137

genetic abnormalities

Host: burley tobacco (Nicotiana tabacum (burley type) L.)
Descriptor: Damage
Description: Genetically abnormall tobacco plants, while usually of little or no economic importance, may be confused with infectious disease or chemical injuries. These abnormalities may be called monstosities, malformations, enations, anamolies, throwbacks, kickbacks, or runouts. It is unusual to find more than one of these abnormal plants in a field. Most fields contain none. Chimeras or variegated tobacco plants have irregular patches on the leaves that vary in color from creamy-white to yellow-green and give the plant a marbled or mottled appearance. Most variegated plants attain normal size, bloom normally, and produce seed. Sometimes abnormally shaped leaves appear on the affected plant. Patterns may be seen in the cured leaves from variegated plants. Another example of genetic abnormality is ruffles. Leaf margins roll downward, and leaves curve downward. Petioles may be elongated. The leaf blade margin may form pouches or folds upon itself, especially along veins on the underside of the leaf.
Image type: Field
Image location: United States

Photographer Information

Name: R.J. Reynolds Tobacco Company Slide Set
Organization: R.J. Reynolds Tobacco Company
Country: United States

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Image Number: 1440137

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Image Citation:(?) R.J. Reynolds Tobacco Company Slide Set, R.J. Reynolds Tobacco Company, Bugwood.org

Node Affiliation: University of Georgia

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Image uploaded on Monday, January 01, 1990
Image Information last updated on Wednesday, May 04, 2011