Final diagnosis


Thielaviopsis basicola

<i><b>Thielaviopsis basicola</b></i> on melon
Part of the taproot and some main roots of this root system are affected by <i><b>Thielaviopsis basicola</b></i>. (black rot)
The browning taproot and root cortex rots and decomposes superficially. <i> <b> Thielaviopsis basicola </b> </i> (black rot)
Degraded root tissue is moist and light to dark brown in color. <i> <b> Thielaviopsis basicola </b> </i> (black rot)
<i><b>Thielaviopsis basicola</b></i> on melon
Thanks to a binocular magnifying glass and a little experiment one can observe the chlamydospore characteristics of <i> <b> Thielaviopsis basicola </b> </i> on and in the altered tissues. (black rot)
Elongated phialides and chain endoconidia of <i> <b> Thielaviopsis basicola </b> </i>. (black rot)
<i><b>Thielaviopsis basicola</b></i> on melon.
Appearance under a photonic microscope of chlamydospores on melon roots of <i> <b> Thielaviopsis basicola </b> </ i> (black rot)
<i><b>Thielaviopsis basicola</b></i> on melon
Appearance of a few disarticulated, dark brown chlamydospores of <i> <b> Thielaviopsis basicola </b> </i>. (black rot)