Logo Dictionary of Botany
header1 header2
Main Menu
Home
entries
Search
Popular
Home arrow entries arrow V arrow virulence

virulence

(pathogenicity) The capacity of a pathogen to cause disease. A pathogen often exists in a number of *physiological races , which, with respect to one particular crop cultivar, may be either virulent or avirulent. The release of resistant crop cultivars imposes a selection pressure on the pathogen to develop new genes for virulence. It has been shown there is a gene-for-gene relationship between crop resistance and virulence of the pathogen.

 
< Prev   Next >
Alphabetical Listing

A B C D E
F G H I J
K L M N O
P Q R S T
U  V  W  X  Y
Z
footer1 footer2
send feedback