Crops
Symptoms of Choanephora cucurbitacearum on Cucurbitaceae
- Organs attacked :
| Leaves | Flowers |
| Fruits | Stems |
- Symptoms :
- Colonization of senescent petals and destruction of whole flowers which rot, brown or even blacken.
- Abortion of young fruits; moist lesions on fruits (initiating from senescent sepals or remnants of floral parts, wounds) rapidly evolving into moist and soft rot causing the tissues to brown more or less (figures 1 - cucumber) (figures 2 to 5 - zucchini) (figures 7 to 9 to 5 - melon) (figure 10 - patisson).
- Damp, dark green to brown lesions on stems (in the cortex in particular) causing leaf wilting and drying.
- Wet damage on leaflets and on leaves developing into rot (figure 6 - courgette).
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- Signs : a blackish and airy mold more or less covers the rotten fabrics. Fruiting bodies in the form of tiny black pinheads are visible (figure 11).
- Possible confusion : rots on fruits with Mucorales ( Rhizopus , Mucor ), Botrytis
- Production areas affected :
| Mayotte | Guyana | New Caledonia |
Figure 1
Figure 2
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Figure 5
Figure 6