Projects / Programmes source: ARIS

Research on natural resistance of vegetable crops against pests

Research activity

Code Science Field Subfield
7.00.00  Interdisciplinary research     

Code Science Field
B390  Biomedical sciences  Phytotechny, horticulture, crop protection, phytopathology 
P300  Natural sciences and mathematics  Analytical chemistry 
vegetable crops, pests, natural resistance, chromatography, mass spectrometry, epicuticular vaxes, triterpenoids
Evaluation (rules)
source: COBISS
Researchers (12)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  17773  Aleksander Bobnar    Technical associate  2005 - 2008  23 
2.  29913  PhD Katarina Kos  Plant production  Researcher  2008  135 
3.  24445  PhD Mitja Križman  Chemistry  Researcher  2005 - 2008  147 
4.  26511  PhD Mitja Martelanc  Chemistry  Junior researcher  2008  68 
5.  00951  PhD Lea Milevoj  Plant production  Researcher  2005 - 2007  663 
6.  05964  PhD Jože Osvald  Plant production  Researcher  2005 - 2008  464 
7.  01095  PhD Mirko Prošek  Chemistry  Researcher  2005 - 2008  406 
8.  15461  PhD Breda Simonovska  Plant production  Head  2005 - 2008  245 
9.  17763  PhD Stanislav Trdan  Biotechnical sciences  Researcher  2005 - 2008  1,065 
10.  15577  Nevenka Valič  Plant production  Researcher  2005 - 2008  89 
11.  11395  PhD Irena Vovk  Chemistry  Researcher  2005 - 2008  548 
12.  17762  PhD Dragan Žnidarčič  Interdisciplinary research  Researcher  2005 - 2008  496 
Organisations (2)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0104  National Institute of Chemistry  Ljubljana  5051592000  20,999 
2.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  65,900 
The main goal of the proposed research is to determine the natural resistance of a number of different varieties of vegetable crops against chosen harmful insects and to explain the natural resistance of vegetable crops on the basis of chemical analysis of surface compounds. The results of the research will be used in practice in different ways at producing of healthier vegetables: the most naturally resistant sorts will be selected and the way of protection of new, sensitive but productive vegetable crop hybrids with natural insecticidal compounds will be determined. The following vegetable crops will be studied during the growing season: Brassicas (different varieties of early white cabbage, late white cabbage, cauliflower, broccoli, kale), Alliaceae (different varieties of onion, leek) and fruit vegetables (different varieties of tomato, pepper and cucumber). Natural resistance of all selected vegetable crops will be evaluated by systematic determination of pests presence and damages. In the chemical part of the research we want to determine the content of epicuticular waxes and their composition, and also some additional surface components from studied vegetable crops. Finally, we would like to estimate the correlation between the surface chemicals (considering their content and composition) and pest damages. We will also perform laboratory testing on the insecticide action of the chosen surface compounds extracts and also fractions of the extracts in order to identify active compounds. We will also consider the possibility of sinergism of different compounds in the pesticide action. It will be necessary to find out or to develop suitable analytical methods based on different chromatographic (gas chromatography, high-performance liquid chromatography, thin-layer chromatography with different detection possibilities) and spectroscopic techniques. Profound understanding of natural resistance based on chemical analysis can additionally lead to discovery of natural compounds with pesticide action that would not be toxic for human beings and would be ascessible through chemical synthesis or extraction from plants.
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