Resistance to Phytophthora infestans in diploid and tetraploid potato families. 2. Resistance in tubers

• Autorzy: Swiezynski K M , Flis B , Osiecka M , Sieczka M T , Zarzycka H
• Języki publikacji: EN

Abstrakty

EN

The tuber reaction to Phytophthora infestans was evaluated in individual genotypes of four diploid and four tetraploid potato families, their parents and standard cultivars. The genotypes were tested several times. Two testing methods were used, based on evaluation of tuber slices or whole tubers, respectively. All inoculations were done with MP 245, a fungus isolate with a broad virulence spectrum. If the reaction of tuber slices was evaluated, the distribution of genotypes in several families deviated considerably from a normal one. In some distributions more than one peak was detectable, indicating segregation of major genes. Genotypes transgressive in resistance were found in four families. If the reaction of whole tubers was evaluated, the distribution of genotypes did not deviate significantly from a normal one. Genotypes transgressive in resistance were found in one family. The tuber reaction to P. infestans depended to a large extent on testing conditions.

Słowa kluczowe

EN

Phytophthora infestans; tetraploid potato; genotype; resistance; potato; tuber; diploid potato

• Wydawca: -
• Czasopismo: Journal of Applied Genetics
• Rocznik: 1997
• Tom: 38
• Numer: 1
• Opis fizyczny: p.33-44,fig.

Twórcy

autor

Swiezynski K M

• Institute for Potato Research, Mlochow, 05-832 Rozalin, Poland

autor

Flis B

• Institute for Potato Research, Mlochow, 05-832 Rozalin, Poland

autor

Osiecka M

• Institute for Potato Research, Mlochow, 05-832 Rozalin, Poland

autor

Sieczka M T

• Institute for Potato Research, Mlochow, 05-832 Rozalin, Poland

autor

Zarzycka H

• Institute for Potato Research, Mlochow, 05-832 Rozalin, Poland

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