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Title: COMPARATIVE EVALUATION OF RESISTANCE TO PHYTOPHTHORA INFESTANS AND AGRONOMIC TRAITS IN POTATO GENOTYPES OF VARIOUS ORIGIN

Author
item SIECZAKA, M - MLOCHOW RES.CTR.,POLAND
item Brown, Charles
item GAWRONSKA, E - MLOCHOW RES. CTR., POLAND
item SWIEZYNSKI, K - MLOCHOW RES. CTR., POLAND
item ZARZYCKA, H - MLOCHOW RES. CTR., POLAND
item ZIMNOCH-GUZOWSKA, E - MLOCHOW RES. CTR., POLAND

Submitted to: European Association for Potato Research
Publication Type: Abstract Only
Publication Acceptance Date: 4/7/1999
Publication Date: N/A
Citation: Sieczaka, M.T., Brown, C.R., Gawronska, E., Swiezynski, K.M., Zarzycka, H., Zimnoch-Guzowska, E. 1999. Comparative evaluation of resistance to phytophthora infestans and agronomic traits in potato genotypes of various origin. Abstracts of Conference Papers, Posters, and Demonstrations of the 14th Triennial Conference of the European Association for Potato Research. p. 154-155.

Interpretive Summary:

Technical Abstract: In 1997-1998, the resistance to Phytophthora infestans and agronomic traits were evaluated in 14 cultivars and 60 breeding selections. The resistance was tested both under high natural infection pressure and in laboratory, using artificial inoculation of detached leaflets and tuber slices. The highly pathogenic fungus strains of P. infestans were used for inoculation. The Polish cv. Meduza and the foreign cv. Cruza 148 have shown a high level of both detached leaflet resistance in laboratory testing and foliar resistance under natural infection pressure. Cv. Meduza had also resistant tuber slices. Among 13 diploid and 47 tetraploid breeding selections, a foliage resistance equal or exceeding that of cvs Cruza 148 and Meduza was found in 9 diploid and 16 tetraploid selections. Among them were selections with a high level of tuber resistance and/or an earlier maturity than cv. Meduza or cv. Cruza 148.