Resistance of Tomato Landraces to Tuta absoluta: Morphological and Biochemical Basis

Authors

  • Gilberto Rodriguez Department Acad. de Fitotecnia, Facultad de Agronomía, Universidad Nacional Agraria La Molina. Paragraph 456. Lima, Peru

Keywords:

tomato, Tuta absoluta, insect resistance, trichomes, secondary metabolites, integrated pest management

Abstract

Tuta absoluta, a major tomato pest, causes severe yield losses globally. This study screened 15 tomato landraces for resistance based on larval survival, feeding damage, and biochemical markers. Three landraces exhibited significant resistance, correlating with higher trichome density and phenolic content.
GC-MS analysis revealed elevated levels of α-tomatine and flavonoids in resistant lines. Behavioral assays confirmed reduced larval preference for resistant genotypes. Integrating resistant landraces into breeding programs can reduce pesticide dependence and enhance integrated pest management strategies.

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Published

2023-06-30

Issue

Vol. 27 No. 1 (2023)

Section

Research Articles