Content of some organic compounds in the leaves of cucumber in relation to its susceptibility to spider mites
1998
Tomczyk, A. (Warsaw Agricultural Unversity (Poland). Dept. of Applied Entomology)
The reason for differences in the development of Tetranychus urticae on selected cultivars of cucumber was studied. For this purpose the chemical analysis of the leaves of 5 cucumber cultivars were conducted to estimate the content of some nutritional substances - proteins, sugars, amino acids - and also the content of secondary plant metabolites - phenols and cucurbitacins. It was found that leaves of highly susceptible to spider mites cv. Corona are richer in most nutritional compounds, excluding amino acids, compared to other studied varieties. They contain more soluble proteins and soluble sugars. In the leaves of cultivar Corona, a higher cucurbitacin content was found in comparison with cultivar Farbio
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