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Fasciations



In melons, the physiological phenomenon of fasciation is observed both on the stems and on the fruits .

  • Fasciation of the stem

Rare plants sometimes have entirely flat stems which get wider and wider as you approach the apex. they also have a more or less fluted appearance due to the joining of the secondary rods (Figures 1 and 2).

This is an extremely rare phenomenon favored by low temperatures, which affects few plants at a time regardless of the variety. Some mutants express this anomaly and pass it on to their offspring who will be affected one hundred percent.

  • Fruit fasciation
In the majority of Cucurbitaceae, as in the melon, we will sometimes observe fruits appearing as the intimate juxtaposition of two fruits (Siamese). It is about a local fasciation of the ovary which splits incompletely and will give two joined fruits (figure 3).

It is also a rather rare physiological phenomenon which should be considered as a curiosity.
Last change : 04/30/21
Fasciation 3
Figure 1
Fasciation2
Figure 2
siamois_melon_DB_407
Figure 3