Studies were conducted in Cameroon in the 1990s to evaluate the development of populations of
Aphis gossypii Glover on different types of host-plant belonging to the Malvaceae family. Several host-plant
characteristics may affect aphid infestation. Firstly, the influence of several varietal morphological characteristics
is interesting. This is the case of the okra leaf character as leaf areas are soon saturated in case of aphid
pullulation. However, this morphological character implies changes to certain components of the crop
management sequence. Plant chemical composition is another interesting pathway for the control of A.
gossypii. The levels of certain components such as amino acids and sugars may partially determine the
development potential of A. gossypii. These varietal control methods can be envisaged in integrated control
programmes and their study deserves to be continued and completed.