Acta Phytopathologica et Entomologica Hungarica (2008) 43, 385-395

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S. Trdan, N. Valic, L. Andjus, I. Vovk, M. Martelanc, B. Simonovska, J. Jerman, R. Vidrih, M. Vidrih and D. Znidarcic (2008)
Which plant compounds influence the natural resistance of cabbage against onion thrips (Thrips tabaci Lindeman)?
Acta Phytopathologica et Entomologica Hungarica 43 (2), 385-395
Abstract: In a field experiment on the natural resistance of cabbage (Brassica oleracea var. capitata ) against onion thrips (Thrips tabaci), 20 cabbage genotypes were included: 9 early, 5 mid-early, 6 mid-late (regarding the longevity of the growing period), 3 red, 17 white (regarding colour), 14 hybrids and 6 varieties (regarding genetic origin). For comparisons between genotypes, we determined significant differences in the mean index of damage on the exterior leaves of cabbage heads (1.12-2.83), the net weight of heads (281.40,151169.6 g), and yield loss (5.8-47.4%). The concentration of several compounds from cabbage leaves (epicuticular wax, alpha-amyrin, ß-amyrin, lupeol, sucrose, glucose, fructose, vitamin C, palmitic acid, stearic acid, and arachidic acid) are measured. For all groups of cabbage genotypes the only confirmed negative correlation was between the extent of damage caused by the sucking of onion thrips and epicuticular wax content on the cabbage leaves (in groups where we artificially placed genotypes with similar characteristics). After this preliminary experiment, the research must be extended in order to determine the effect of the remaining analysed compounds in cabbage leaves for resistance (sensitivity) of cabbage to onion thrips attack.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Stanislav Trdan, Ljiljana Andjus

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Thrips tabaci Cabbage (Brassica oleracea) Slovenia