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Screening for Resistance of Potato Lines to the Potato Tuberworm, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

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  • The potato tuberworm, Phthorimaea operculella (Zeller) (PTW), is one of the most important limitations to potato, Solanum tuberosum L., productivity worldwide. Leaves, stems, petioles and more importantly, potato tubers, in the field and storage can be seriously affected. Due to the relatively recent arrival of the PTWin the United States Pacific Northwest, the local and regional lines have never been screened for tuber resistance to PTW. Thus, the objective of this study was to screen regional potato lines for potential PTW resistance by tubers under field and laboratory conditions. Experiments were conducted at the Hermiston Agricultural Research and Extension Center in Hermiston Oregon in 2006 and 2007. Accessions that had few number of mines per tuber were AC97521-1R/Y, Q174-2, Rubi, Yuguima, Paciencia, TM-3, KWPTM24 and CIP 780660; lines than had few larvae per tuber were A97287-6, PA00N10-5, AC97521-1R/Y, Q174-2, PA04LNC2-1, PA04LNC4-1, TM-3 and CIP 780660. Incorporating host plant resistance to tuber penetration by PTW larvae together with appropriate cultural practices including limitation of exposure time of tubers in the field and judicious use of chemicals may provide the best sustainable management option.
  • Keywords: Phthorimaea operculella, Insects, Potato, Clones, Germplasm, Resistance, Columbia basin, Potato tubermoth
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  • Silvia I Rondon, Charles R Brown, & Ruben Marchosky. (2013). Screening for resistance of potato lines to the potato tuberworm, phthorimaea operculella (zeller) (lepidoptera: Gelechiidae). American Journal of Potato Research, 90(1), 71. doi: 10.1007/s12230-012-9278-8
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  • 90
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  • 1
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  • We gratefully acknowledge the Oregon Potato Commission and Western IPM center for financial support.
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