Image Number: 1402016

Genetic abnormalities are not economically important but may be confused with infectious diseases or chemical injuries. The most common abnormalities are called chimeras, which are plants composed of two or more genetically different tissues caused by mutation in vegetative cells. They usually occur as pie-shaped sectors of leaves, stalks or flowers and appear on leaves as ruffled texture or irregular patches of yellow-green or white. Veins usually mark the boundaries of variegated leaf tissue.
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United States


Kingdom: Other damage agents
Phylum: Other damage agents
Class: Other damage agents
Order: Abiotic
Family: Other abiotic damage
Subject: genetic abnormalities


Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Solanales
Family: Solanaceae
Genus: Nicotiana
Subject: Nicotiana tabacum (flue-cured type) L.
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Image uploaded:
Sunday, March 10, 2002
Image last updated:
Friday, July 29, 2011