Author/Authors :
drider, rkia université ibn tofail - faculté des sciences - laboratoire de botanique et de protection des plantes, Maroc , ouazzani touhami, amina université ibn tofaïl - faculté des sciences - laboratoire de botanique et de protection des plantes, maroc , el hadji djibo, halima université ibn tofail - faculté des sciences - laboratoire de botanique et de protection des plantes, Maroc , benkirane, rachid université ibn tofaïl - faculté des sciences - laboratoire de botanique et de protection des plantes, Maroc , douira, allal université ibn tofaïl - faculté des sciences - laboratoire de botanique et de protection des plantes, Maroc , hsissou, driss université cadi ayyad - faculté des sciences et techniques guéliz - laboratoire de biotechnologie de la valorisation et la protection des agro-ressources, Maroc
Abstract :
A survey was done in the main streets of Kenitra city (north-western Morocco) in the spring of 2007 and 2008 revealed that 75% of the alignment trees showed foliar symptoms. 50% of the leaves of Populus nigra had shown lesions. The morphological and cultural characters indicated that the isolated fungus was Curvularia lunata. The Koch’s postulate was verified by inoculating healthy leaves of Populus nigra with main fungus using two techniques of inoculation and similar symptoms were observed on all inoculated leaves. Infection started at the periphery, spreaded and invaded 75 % to 80% of the leaves surface. C. lunata produced conidia abundantly on the inoculated leaves of P. nigra both by the conidial suspension (4.96×10^5 conidia/cm^2) and mycelial disks (3.61×10^5 conidia/ cm^2)
NaturalLanguageKeyword :
Morocco , populus nigra , curvularia lunata , leaf spot , koch’s postulate
