Impact of Methyl Jasmonate (MeJA) on Cotton Resistance (Gossypium hirsutum L. var Y 764G3) a Fusarium Oxysporum Vasynfectum and the Chlorophyll Content of the Leaves
N'guessan Affoué Sylvie Rachelle, N'GONIAN Kouadio Serge, KONAN Adjoua Estelle, AYOLIE Koutoua, Kouakou Tanoh Hilaire
Biotechnology Journal International · pp. 141–149 · Published 27 Jan 2026
10.9734/bji/2026/v30i1827Abstract
A tropical plant belonging to the genus Gossypium, cotton is cultivated for both its fibers and seeds. In Côte d'Ivoire, cotton cultivation represents 10% of export earnings and contributes 1.7% to the gross domestic product. Despite its social and economic importance, cotton farming is attacked by numerous pests and parasites, causing crop losses. In tropical regions, Fusarium wilt causes enormous damage. Objective: The objective of this study was to test the influence of the application of methyl jasmonate on the resistance of cotton plants to fusarium wilt. Location of the Study: The first part of this study was carried out on the experimental plot of the Nagui Abnrogoua University and the second part at the Laboratory of Biology and Plant Production (LBPV) of said University. Methodology: Cotton plants were treated with methyl jasmonate to stimulate natural defenses and then infected with Fusarium Oxysporum. Results: The results showed that chlorophyll content increased in plants treated with methyl jasmonate. The chla / chlb ratio was greater than 1, while the control plants had the lowest ratio. Growth parameters also increased relatively in the methyl jasmonate -treated (TIM) plants. Untreated and uninoculated (NTNI) plants exhibited the highest growth parameters. Conclusion: Methyl jasmonate improves the resistance of cotton to Fusarium oxysporum f. sp. vasinfectum.
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