Susceptibility to Phaeoramularia angolensis of some citrus varieties grown in the Cameroon rain forests.

摘要

The susceptibility of 96 Citrus species and varieties to Phaeoramularia angolensis was assessed at N'Kolbisson in the Yaounde region of Cameroon. Varieties originated from Corsica and were introduced to Cameroon between 1984 and 1988. Susceptibilitywas assessed by measuring the percentage of infected leaves and fruit, determined by the number of lesions observed on both organs. The relationship between infested leaves and infested fruit varied with the groups, species and varieties, but fruits suffered more damage than leaves. None of the 96 citrus varieties was completely resistant; however, some limes, lemons, grapefruits and mandarins were partially resistant.