Pathogenic Capacity of Botrytis cinerea on Leaves of Pyrus mamorensis, an Endemic Tree of Mamora Forest in Morocco

  • Zineb Sellal Laboratoire de Botanique et Protection des Plantes, Département des Sciences de la Vie, Faculté des Sciences, B. P. 133, Université Ibn Tofail, Kénitra, Morocco
  • Jamila Dahmani Laboratoire de Botanique et Protection des Plantes, Département des Sciences de la Vie, Faculté des Sciences, B. P. 133, Université Ibn Tofail, Kénitra, Morocco
  • Rachid Benkirane Laboratoire de Botanique et Protection des Plantes, Département des Sciences de la Vie, Faculté des Sciences, B. P. 133, Université Ibn Tofail, Kénitra, Morocco
  • Amina Ouazzani Touhami Laboratoire de Botanique et Protection des Plantes, Département des Sciences de la Vie, Faculté des Sciences, B. P. 133, Université Ibn Tofail, Kénitra, Morocco
  • Allal Douira Laboratoire de Botanique et Protection des Plantes, Département des Sciences de la Vie, Faculté des Sciences, B. P. 133, Université Ibn Tofail, Kénitra, Morocco
Keywords: Morocco, Pyrus mamorensis, Botrytis cinerea, gray mold, inoculation.

Abstract

A survey in the Mamora forest was done in the spring of 2010 and revealed that 67% of buds and 27% of leaves of Pyrus mamorensis (Trabut) samples collected had lesions with a gray felting. The pathogenic fungus was identified as Botrytis cinerea by the filter – paper technic. Koch´s postulate was verified by inoculating healthy leaves. The estimated disease severity on P. mamorensis leaves was respectively 75.56% and 68.81% for inoculation by conidial suspension and the mycelial disks. Conidia production of Botrytis cinerea on inoculated leaves by conidial suspension was 1.03.105 conidia.cm-2 and by mycelial disks was 0.60.105 conidia.cm-2. This was the first report of gray mold disease of Mamora pear caused by Botrytis cinerea in Morocco.

Published
2017-06-19
Section
ARTICLES