Influence of temperature on the infectivity of Fusarium oxysporum f. sp. vanillae in Vanilla planifolia and in hybrids V. planifolia x V. pompona
Vanilla planifolia is the main vegetable source of vanillin, a flavoring of wide commercial importance. Fusarium oxysporum f. sp. vanillae, the main V. planifolia pathogen, has devastated whole crops worldwide. Vanilla pompona possesses resistance to common genus pathogens. Extreme climatic variatio...
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| Format: | Online |
| Sprache: | spa |
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Universidad de Sonora
2022
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| Online Zugang: | https://biotecnia.unison.mx/index.php/biotecnia/article/view/1737 |
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| Zusammenfassung: | Vanilla planifolia is the main vegetable source of vanillin, a flavoring of wide commercial importance. Fusarium oxysporum f. sp. vanillae, the main V. planifolia pathogen, has devastated whole crops worldwide. Vanilla pompona possesses resistance to common genus pathogens. Extreme climatic variations affect the plant-pathogen interactions. Based on the assumption that temperatures above 28 ºC intensify the infectivity of F. oxysporum in vanilla, was determinate the influence of the increase in temperature on the infectivity of F. oxysporum f. sp. vanillae (strain M21C5) in V. planifolia and two hybrids of V. planifolia x V. pompona. Cuttings roots of hybrids 1 and 2 (V. pompona x V. planifolia) and V. planifolia were inoculated with spore suspensions of F. oxysporum f. sp. vanillae. Disease progression was measured for 60 days at 25, 30 and 35 °C. Five replicates per treatment were used, including a control group. ANOVA post hoc Tukey test (P = 0.05) was used for data analysis. V. planifolia was susceptible at 35 °C and highly susceptible at 25 and 30 °C. Both hybrids were resistant to the pathogen at the evaluated temperatures. Due to the resistance, they showed, the hybrids of V. planifolia x V. pompona are a viable alternative to the pathogen. |
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