Folia Horticulturae

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Effect of leaf pigments on black bean aphid (Aphis fabae Scop.) invasion of red beets

Irena Łuczak*, Maria Gawęda**

**Department of Plant Protection
**Institute of Vegetables and Ornamental Plants
**Faculty of Horticulture, Agricultural University
**29 Listopada 54, 31-425 Kraków, Poland

The work concerned differences in the content of green (chlorophyll a + b) and orange-yellow (carotenoid) pigments in the leaves of 3 red beet cultivars and their effect on Aphis fabae invasion. The greatest numbers of winged and wingless individuals and the greatest numbers of plants attacked by aphids were found in the cultivar Okrągły Ciemnoczerwony. In the leaves of this cultivar were found a smaller content of green pigments and a higher ratio of carotenoids to chlorophylls. The cultivars Egipski and Czerwona Kula, characterized by a lower carotenoids/chlorophylls a + b quotient, were always less invaded by the investigated aphid.

Łuczak I., Gawęda M., 1991. Effect of leaf pigments on black bean aphid (Aphis fabae Scop.) invasion of red beets. Folia Horticulturae III/3: 27-37.