Analysis of the behavior of virus transmitting Green Peach Aphid, Myzus persicae, feeding on wild potato, Solanum tarnii, interspecific somatic hybrids and their progeny

Thieme, Ramona GND; Heinze, Michael; Thieme, Thomas; Schubert, Jörg GND; Heimbach, Udo GND

Resistance to the non-persistent Potato virus Y (PVY) in potato lines produced by fusing the cells of the wild species Solanum tarnii Hawkes et Hjerting with those of S. tuberosum L. cv. ‘Delikat’ is not correlated with those aspects of the feeding behaviour of Myzus persicae (Sulzer) related to virus acquisition and transmission. There were no marked differences in the parameters of the EPGs (electrical penetration graphs) of aphid feeding behaviour, such as in the ‘Number and duration of potential drops’, when feeding on PVY susceptible cv. ‘Delikat’, and S. tarnii, somatic hybrids and selected backcross (BC) lines resistant to PVY. Nevertheless, significantly shorter periods of sap ingestion (E2) and a higher mortality indicate that S. tarnii, two somatic hybrids and a selected BC1 line are unsuitable hosts for potato aphids. This resistance may be due to sieve element blocking or phloem sap composition.

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Thieme, Ramona / Heinze, Michael / Thieme, Thomas / et al: Analysis of the behavior of virus transmitting Green Peach Aphid, Myzus persicae, feeding on wild potato, Solanum tarnii, interspecific somatic hybrids and their progeny. 2009.

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