Inhibition of growth of some plant pathogenic fungi using from some Nigerian plants.

摘要

The in vitro and in-vivo efficacy of leaf extracts from 5 plants commonly used in traditional medicine in Nigeria in inhibiting the growth of 4 plant pathogenic fungi (Macrophomina phaseolina, Fusarium moniliforme [Gibberella fujikuroi], F. solani and Botryodiplodia theobromae) was evaluated. Aqueous extracts of Cymbopogon citratus completely inhibited the growth of M. phaseolina and B. theobromae, while it significantly reduced the growth of G. fujikuroi and F. solani. Morinda lucida significantlyinhibited the growth of all test fungi followed by extracts from Azadirachta indica. Extracts from Chromolaena odorata and Delonix regia were toxic to some fungi and ineffective against others. When plant extracts from A. indica, C. citratus and M. lucida were tested in vivo on melon seeds infected with different fungal isolates, C. citratus was the most effective, followed by A. indica and M. lucida.