Genetic anomalies *, chimeras

• Organs attacked  : leaves, fruits, stems.

• Symptoms :
  • Leaf discolorations affecting one or more leaves: contiguous yellow to white sectors, more or less extensive, are visible on the blade (figures 1 to 5);
  • Discolorations sporadically affecting the stem and fruits;
  • Leaf development leading to a more or less marked deformation of the blade (figures 6 to 8).

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• Cause : local malfunction of limbus tissues, chlorophyll synthesis is more or less inhibited. This genetic anomaly must be regarded as a curiosity without consequences for the culture. In fact, in the majority of cases, a very small proportion of plants are affected. It is to be classified under physiological diseases.

• Diagnostic clues :
  • In the majority of cases, one to a few plants are affected;
  • Symptoms normally appear early, and only in the cultivated species;
  • The expression of symptoms of certain genetic diseases can be influenced by temperature and / or the genotype cultivated.

• Possible confusion : virus or phytotoxicity in particular. Note that this condition is in no way transmissible to surrounding plants.

• Remedies :
• No specific action to be taken;
• Eliminate the affected plant if you wish.