CBN-V Video Archives - S7-15
Management of Cassava Diseases Using Tissue Culture Material in Togo

Kpemoua K.E., K. Assignon, A Banito and B. Bissang

Institut Togolais de Recherche Agronomique (ITRA) BP 1163, Lomé, Togo itra@cafe.tg

        The apices of four acceptable but very susceptible cassava varieties to bacterial blight, caused by Xanthomonas axonopodis pv manihotis, were used to produce in vitro plantlets. These plantlets were acclimatized to natural conditions in pots. Rapid multiplication technique was used to obtain large number of cuttings, which were planted in field trials. The evaluation of the plants for aerial diseases showed that plants were free of bacterial and African cassava mosaic virus symptoms. Leaf spots caused by Cercospora sp., however, occurred 6 months after planting. The cuttings from these healthy plants were used to establish cassava fields to serve as source of planting material. This activity is on going in the forest, forest-savanna transition and wet savanna zones of the country. It is expected that, with time, the healthy material will replace the infected material being grown by the farmers.

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