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Title: MULTIPLE SITE TESTS OF RESISTANCE TO LATE BLIGHT OF SOLANUM BULBOCASTANUM- POTATO SOMATIC HYBRIDS AND THEIR PROGENY

Author
item Helgeson, John
item Haberlach, Geraldine
item MCGRATH, J. - UNIVERSITY OF WISCONSIN
item JAMES, R. - UNIVERSITY OF WISCONSIN
item STEVENSON, W. - UNIVERSITY OF WISCONSIN

Submitted to: Potato Association of America Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 8/12/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Last year we reported that some sexual progeny of somatic hybrids between potato and Solanum bulbocastanum, a wild Mexican species, were highly resistant to late blight caused by the US-8 genotype of Phytophthora infestans. Because the results at Hancock, WI represented only one site at one time, we thought that it was important to repeat the test in a number of different locations. Tubers were grown in the greenhouse in Madison during the winter of 1994-1995 and distributed to cooperators for testing at Hancock and 7 other locations in North America. Cooperators included W.E. Fry, K.G. Haynes, K.L. Deahl, H.W. Platt, G.A. Secor, D.A. Inglis, and U. Maldonado. Because of the fact that there was no major epidemic at Hancock or Presque Isle, ME, it was not possible to get data on late blight resistance at those locations. However good late blight epidemics occurred in test plots in North Dakota, Washington, West Virginia, New York, Prince Edward Island, Canada and Toluca, Mexico. The lines that were resistant at Hancock in 1994 were resistant at those 6 locations in 1995.