Description
Chrysanthemum is one of the most important ornamental plants and its cultivation is affected by thrips damage. The most relevant thrips species in Europe is Frankliniella occidentalis, or western flower thrips (WFT). Genetic variation for sensitivity towards thrips was found among Chrysanthemum cultivars, but no effective resistance has been identified. In this paper, we identified wild Chrysanthemum accessions with effective levels of resistance to thrips F. occidentalis. Forty-eight wild accessions from different Chrysanthemum species were screened in whole plant assays for population build-up, and in leaf-disc assays for larval development, larval survival, and adult oviposition. Significant differences were found between resistant and susceptible accessions for thrips population build-up on whole plants, and for larval development and survival on leaf-discs. On resistant accessions, thrips larvae did not develop into prepupae, interrupting the developmental cycle. No significant differences were found for oviposition on leaf-discs. Based on these assays, we identified resistant and susceptible wild accessions, which can be used to elucidate the genetics of the resistance.| Period | 21 Feb 2023 |
|---|---|
| Event title | Entomology Congress 2023 in Bolzano |
| Event type | Conference/symposium |
| Location | Bolzano, ItalyShow on map |
| Degree of Recognition | International |
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