Multiple Selection of Potato Cyst Nematode Globodera pallida Virulence on a Range of Potato Species. I. Serial Selection on Solanum-hybrids |
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Authors: | S J Turner C C Fleming |
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Institution: | (1) Department of Agriculture and Rural Development for Northern Ireland, Applied Plant Science Division, Agriculture and Food Science Centre, Newforge Lane, Belfast, BT9 5PX Northern Ireland, UK |
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Abstract: | A series of selection experiments on potato cyst nematode Globodera pallida, pathotype Pa1, tested the virulence response of the nematode to a range of resistant potato Solanum genotypes. Alleles conferring virulence against all four Solanum sources used in the study (i.e. Solanum vernei, S. multidissectum, S. sanctae-rosae and S. tuberosum ssp. andigena) were detected. Selection for multiple virulence against a combination of resistant sources resulted in the originally-selected virulence genes being retained or lost. The mechanism, or basis, of potato cyst nematode resistance differs between the Solanum species. The appropriate use of resistance cultivars produced from a range of Solanum-resistant species offers a management tool for controlling potato cyst nematode levels in infested land. |
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Keywords: | Solanum multidissectum Solanum sanctae-rosae Solanum tuberosum ssp andigena Solanum vernei resistance virulence |
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