Authors:
YEO Navigué Abou, KONAN Yao Kouakou François, KOUADIO Oi Kouadio Samuel, N’goran Kouakou Désiré, ABEDA Zagadou Herman, KOUAKOU Tanoh Hilaire and ZOUZOU Michel |
Abstract:
The natural defense of pineapple was stimulate to evaluate the tolerance to Fusarium
moniliforme var. subglutinans (FMS), agent of fruitlet core rot (FCR). For this purpose,
vivoplants of pineapple varieties (MD2 and Smooth Cayenne) were treated with methyl
jasmonate (MeJA) and Calliete® (Ca) as well as combination of both biocontrols (MeJA + Ca).
The plants were then inoculated with the pathogen. The incidence of FCR was estimated after
inoculation of the flower and opening the fruit at harvest. Protection of pineapple by natural
defense stimulators (NDS) against FCR was appraised in fruits of plants treated and inoculated
with FMS compared to untreated and inoculated plants. Growth parameters (stem diameter) and
physiological parameters such as leaf pigments (chlorophylls and carotenoids) and lignin content
were evaluated. The results showed that the elicitors mobilized a wide range of defense
molecules in pineapple to undermine the FCR. However, the combination of both elicitors
(MeJA + Ca) has a potentiating effect on the tolerance of pineapple to FMS compared to the elicitors taken individually. The use of natural defense stimulators (NDS) is therefore an
effective way to protect pineapple against FMS. Their application in the agricultural environment
could contribute to the development of a sustainable agriculture that respects the environment
and human health. |
