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Verticillium - Toubkal

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168<br />

Figure 41. Effet de la salinité sur l'action antagoniste des<br />

substances non volatiles de Trichoderma harzianum sur<br />

la croissance diamétrale de <strong>Verticillium</strong><br />

80<br />

Inhibition de la croissance de<br />

<strong>Verticillium</strong> (%)<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

0 2 4 6 8 12 16<br />

Concentrations du milieu de culture en NaCl ( g/l)<br />

Figure 42. Influence de la salinité sur l'action antagoniste<br />

des substances non volatiles de Trichoderma harzianum<br />

sur l'abondance des microsclérotes de <strong>Verticillium</strong><br />

Diametètre de la zone pigmentée des<br />

colonies de <strong>Verticillium</strong> ( mm)<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

Absence de Trichoderma<br />

Presence de Trichoderma<br />

0 4 8 12 16<br />

Concentrations en NaCl (g/l)

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