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SELECTION OF QUANTITATIVE RESISTANCE POTATO CLONES AGAINST PHYTOPHTHORA LATE BLIGHT IN KOREA

Ryu, Kyoung Yul; Jee, Hyeong-Jin; Choi, Du-Hoi; Kim, Jeom-Soon; Landeo, Juan A. and Cho, Hyun-Mook (2005) SELECTION OF QUANTITATIVE RESISTANCE POTATO CLONES AGAINST PHYTOPHTHORA LATE BLIGHT IN KOREA. Poster at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

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Summary

Incidence and progress of potato late blight largely depends on susceptibility of the host in organic farming cultivation. In susceptible hosts, the disease completely destroys whole leaves within two weeks in organic farming fields. However, potato leaves of 14 quantitative resistance hosts remained healthy for 5 weeks after the first symptom appearance in the susceptible host. Area under disease progress curve (AUDPC) of quantitative resistance host ranged from 37.5 to 112.5 and slowly expanded compared with that of susceptible host. On detached leaves assay, seven clones of quantitative resistance host did not produce any sporangia against three isolates collected from different areas in Korea. Physiological races of the pathogen, Phytophthora infestans, were diversified as R0, 1,3,4,5,7,10,11 in organic farming fields and the races distributed with similar patterns in different areas.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Organic Farming, Potato Late Blight, Resistance
Subjects: Crop husbandry > Crop health, quality, protection
Research affiliation: International Conferences > 2005: 1st ISOFAR Conference > 2005: 1st ISOFAR Conference
Related Links:http://orgprints.org/4013/, http://www.isofar.org/adelaide2005, http://orgprints.org/view/projects/int-conf-isofar-2005.html
Deposited By: ISOFAR,
ID Code:4462
Deposited On:15 Nov 2005
Last Modified:12 Apr 2010 07:30
Document Language:English
Status:Unpublished
Refereed:Peer-reviewed and accepted
Additional Publishing Information:The paper presented here is the final paper submitted by the authors to the conference Researching Sustainable Systems.
The final edited papers are available with the following publication:
Köpke, Ulrich; Niggli, Urs; Neuhoff, Daniel; Cornish, Peter; Lockeretz, Willie und Willer, Helga, (Hrsg.) (2005) Researching Sustainable Systems. Proceedings of the First Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), Held in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the National Association for Sustainable Agriculture, Australia (NASAA), 21 – 23 September 2005, Adelaide Convention Centre, Adelaide, South Australia.. Research Institute of Organic Agriculture FiBL, CH-Frick, and International Society of Organic Agriculture Research (ISOFAR), c/o Institute of Organic Agriculture (IOL), DE-University of Bonn. http://orgprints.org/4013/
Distribution: Paper copies may be ordered from FiBL at a cost of 28 Euros plus mailing costs (see FiBL shop at http://www.fibl.org/shop); FiBL order number 1394. A PDF version is available free of charge for ISOFAR members via the member area of www.isofar.org.

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