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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Publications at this Location » Publication #352744
Research Project: Potato Genetic Improvement for Enhanced Tuber Quality and Greater Productivity and Sustainability in Western U.S. Production

Location: Small Grains and Potato Germplasm Research

Title: Host resistance in potato to three Globodera species

Author
item Whitworth, Jonathan
item Novy, Richard - Rich
item Zasada, Inga
item Wang, Xiaohong
item DANDURAND, LOUISE-MARIE - University Of Idaho
item KUHL, JOSEPH - University Of Idaho

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/26/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary: Potato cyst nematodes (PCN) under quarantine in the U.S. and Canada are the pale cyst nematode (Globodera pallida) and the golden cyst nematode (G. rostochiensis). A new species, G. ellingtonae was discovered in Oregon and Idaho in 2008 and is not currently a quarantine pest. This study examined 22 potato breeding lines/varieties for their resistance to these three nematodes. Resistance to the pale cyst nematode was not as high as was resistance to the golden cyst nematode and G. ellingtonae. Most of the breeding lines/varieties with resistance to the golden cyst nematode were also resistant to G. ellingtonae suggesting a common source of resistance between the two. Results will be used to develop resistant breeding populations that show good resistance to all three nematode species.

Technical Abstract: Potato cyst nematodes (PCN) under quarantine in the U.S. and Canada are the pale cyst nematode (Globodera pallida) and the golden cyst nematode (G. rostochiensis). A new species, G. ellingtonae was discovered in Oregon and Idaho in 2008 and is not currently a quarantine pest. In 2006 detection of PCN occurred in Idaho, U.S.A. (pale cyst) and Quebec, Canada (golden cyst). Host resistance can help with eradication and other mitigation efforts. Resistance in potato to the golden cyst nematode pathotype Ro1 is available from dominant gene H1, which has been incorporated into many commercial varieties. Resistance in potato to pale cyst nematode is not as well developed and is unknown for G. ellingtonae. This study evaluated 22 potato breeding lines/cultivars for resistance to three Globodera species. Resistance to golden cyst nematode was found in many entries. Resistance to pale cyst nematode was also found, but at a lower level. A strong correlation existed for resistance to G. rostochiensis and G. ellingtonae suggesting a common resistance gene(s) possibly with H1 conferring that resistance. Results will be used to develop resistant breeding populations based on russet-skinned long tuber type predominant in the western U.S. These new cultivars would have resistance against multiple species of Globodera.