Einige Besonderheiten bei der Vererbung derPhytophthora-Resistenz vonSolanum stoloniferum und die sich daraus ergebende Möglichkeit zur Züchtung phytophthoraresistenter Kartoffelsorten

Schick, R.; Schick, E.

doi:10.1007/bf00709093

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…et al. Potato Tuber Resistance to Phytophthora infestans ascribed either to recessive genes for resistance (GASTRONOVO 1954, SCHICK andSCHICK 1961) or to gene interaction (KILLICK and MALCOLM-SON 1973). The group of 15 early-maturing genotypes with comparatively high levels of tuber resistance consisted of 10 tetraploids and 5 diploids (lower part of Table 2).…”

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confidence: 98%

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Potato Tuber Resistance to Phytophthora infestans and its Relation to Maturity

Świeżyński¹,

Krusiec²,

Osiecka³

et al. 1993

Plant Breeding

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Tuber resistance to P. infestans was evaluated in the progeny of potato genotypes differing in levels of resistance and maturity. Two methods of tuber evaluation were used: testing whole tubers and testing tuber slices.In the progeny, some genotypes were superior in resistance to the more resistant parent. This superiority was never associated with early maturity. The results of both tuber-testing methods were positively correlated but the interaction genotypes x years was more pronounced in the reaction of tuber slices.It is concluded that: (1) transgression in tuber resistance may be obtained, (2) a high level of tuber resistance is difficult to combine with early maturity and (3) the expression of genes for specific resistance was more pronounced in testing tuber slices than in testing whole tubers.A preliminary evaluation of potato families segregating for maturity and tuber resistance revealed that both characters were only weakly correlated (SWIE2YI^SKI et al. 1991). Continued testing of the parents and selected progeny provided new information on tuber resistance and its relation to maturity which is presented in this paper.Three groups of potato genotypes were evaluated: 14 parents and standard cultivars differing in tuber resistance and maturity, 12 progeny genotypes, selected in the first year of testing as outstanding in tuber resistance, and 15 progeny genotypes selected in the first year of testing as early maturing with the highest tuber resistance in this maturity group. Tuber resistance was evaluated, in the autumn, over a period of 3 years (1989)(1990)(1991). Two methods of tuber evaluation were used; testing whole tubers and testing tuber slices. Each genotype was evaluated in the first year in at least 2 replications, with 6 in the second year and 8 in the third year. In each replication 5 whole tubers and 5 tuber slices were tested. The results are presented in a 9-grade scale (9 = resistant). For inoculation, virulent fungus isolates collected from plants infected in nature were used. On Black's differentials their virulence at testing time was: 1.2.3.4.7.10 and 11; sometimes factors 5 and 8 also being expressed.Maturity was determined in plants growing in the field and was measured in days counted from the planting date.The origin of the evaluated potato genotypes and the description of the tuber testing methods are given by SwiE^YlNiSKi et al. (1991).Among parents and standard cultivars there were late maturing genotypes with resistant tubers and early maturing genotypes with susceptible tubers. In this group the correlation U.S.

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confidence: 98%

“…-0.5 -1.6** -0.8** -0.9** -0.2 -0.9* -0.6 -2.5** -1.7** -1.6** -1.4** -2.0** -1.1** -1.5** -2.3** -2.1** -1.4 -0.9 0.1 -3.2** -0.6 -2.9** -2.8** -4.4** -4.0** -2.2** -3.9** -3.5** -2.2** -0.8 -1.2* -2.7** -2.3 ascribed either to recessive genes for resistance (GASTRONOVO 1954, SCHICK andSCHICK 1961) or to gene interaction (KILLICK and MALCOLM-SON 1973).…”

mentioning

confidence: 99%

Potato Tuber Resistance to Phytophthora infestans and its Relation to Maturity

Świeżyński¹,

Krusiec²,

Osiecka³

et al. 1993

Plant Breeding

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“…Such genes are often referred to as R-genes (Malcolmson & Black, 1966;Skidmore & Shattock, 1985). A recessive gene, determining specific resistance, has been described in S. stoloniferum (Schick & Schick, 1961). There are indications that the expression of R-genes may be modified by other genes (EI-Kharbotly et al, 1996b;Ordonez et al, 1997;Trognitz, 1998).…”

Section: Inheritance Of Tuber Resistance To P Infestansmentioning

confidence: 99%

Breeding potato cultivars with tubers resistant toPhytophthora infestans

Świeżyński

Zimnoch‐Guzowska

2001

Potato Res

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Available information has been reviewed on tuber resistance to P. infestans, its inheritance and breeding procedures used to obtain potato cultivars superior in this character.P. infestans is worldwide the most destructive potato pathogen. Tuber resistance is an essential component of potato resistance as this pathogen is often responsible for tuber rot in storage, and infected tubers of susceptible cultivars provide an important way for its overwintering.In Europe many cultivars and advanced breeders selections have been obtained with tuber resistance to P. infestans, but in the last decades no progress is noted in the mean level of this resistance in cultivars. The expression of tuber resistance depends to a large extent on testing conditions and therefore it can be difficult to evaluate. Consequently making progress in breeding is not easy, and also cultivar assessment data from various countries sometimes differ considerably. It is concluded from published data that it should be easier to make progress in breeding potato cultivars with resistant tubers if more attention is paid to combining the various types of resistance which are already known, and if the genetic determination of durable resistance to P.infestans is better understood.

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Resistance to Late Blight in Potato

Śliwka¹,

Zimnoch‐Guzowska²

2013

Translational Genomics for Crop Breeding

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Einige Besonderheiten bei der Vererbung derPhytophthora-Resistenz vonSolanum stoloniferum und die sich daraus ergebende Möglichkeit zur Züchtung phytophthoraresistenter Kartoffelsorten

Cited by 4 publications

References 2 publications

Potato Tuber Resistance to Phytophthora infestans and its Relation to Maturity

Potato Tuber Resistance to Phytophthora infestans and its Relation to Maturity

Breeding potato cultivars with tubers resistant toPhytophthora infestans

Resistance to Late Blight in Potato

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