Final diagnosis


Verticillium dahliae / Verticillium albo-atrum (Verticillium wilt )

Verticillium8
Verticillium4
Verticillium9
Verticillium5
Verticillium6
Verticillium7
Verticillium10
This stem, in cross section, shows brown areas relating to the presence of <b> <i> Verticillium dahliae </i> </b> (<i> Verticillium </i> wilt).
Verticillium12
Verticillium11
The vessels of the upper stem are more or less pale brown and contrast with the healthy ones of the lower one. <b> <i> Verticillium dalhiae </i> </b> (verticillium wilt, <i> Verticillium </i> wilt)
Several leaflets located on one side of this leaf are affected. This distribution betrays the vascular character of verticillium wilt. <b> <i> Verticillium dalhiae </i> </b> (verticillium wilt, <i> Verticillium </i> wilt)
Several leaflets on this leaf show the same V-shaped necrotic lesions that are haloed with a chlorotic margin. <b> <i> Verticillium dahliae </i> </b> (<i> Verticillium </i> wilt)
A localized V-shaped interveinal yellowing gradually sets in on this leaflet, which is otherwise withered. <b> <i> Verticillium dalhiae </i> </b> (verticillium wilt, <i> Verticillium </i> wilt)
Yellowing intensifies and leaf tissue eventually necroses. They then take on a brownish tint. <b> <i> Verticillium dalhiae </i> </b> (verticillium wilt, <i> Verticillium </i> wilt)
The conidiophores of <b> <i> Verticillium dahliae </i> </b> are branched in whorls; they produce ellipsoid, hyaline conidia, grouped together in droplets at their terminal or lateral ends (<i> Verticillium </i> wilt).
The conidiophores of <b> <i> Verticillium dahliae </i> </b> are branched into whorls (verticillium wilt, <i> Verticillium </i> wilt).
Verticillium16
Verticillium15
<b><i>Verticillium dahliae</i></b> (<i>Verticillium</i> wilt)
Verticillium1