Phenotypic stability of resistance to late blight in potato clones evaluated at eight sites in the United States

Haynes, Kathleen G.; Lambert, D. H.; Christ, B. J.; Weingartner, D. P.; Douches, David S.; Backlund, Jan Erik; Secor, Gary A.; Fry, William E.; Stevenson, W. H.

doi:10.1007/bf02854215

Cited by 48 publications

(37 citation statements)

References 32 publications

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“…In Potato the race-specific approach has turned out not to be durable, because of appearance of compatible races of Phytophthora infestans (Turkensteen, 1989;Umaerus and Umaerus 1994). Race-non-specific resistance to late blight in potato appears to be more stable and durable, but it provides only partial protection (Thurston, 1971;Haynes et al 1998;Landeo et al 2000b). This type of resistance is characterized by continuous variation in phenotypic appearance and complex polygenic inheritance (Black, 1970;Umaerus 1970).…”

Section: Discussionmentioning

confidence: 93%

“…Race-specific resistance controlled by major resistance (R) gene is not considered to be durable due to continuous change in pathogen and in India, as in many other countries, the current strategy is to focus on polygenically controlled quantitative resistance as most valuable source of resistance (Umaerus and Umaerus 1994;Singh and Shekhwat 1999). Quantitative race-non-specific resistance contributed by minor genes is more durable as this form of resistance is effective against a broad range of pathogenic strains of Phytophthora infestans (Haynes et al 1998;Landeo et al 2000b). Information on combining ability of parents for quantitative resistance for late blight can be useful for breeding late blight resistance cultivars.…”

Section: Introductionmentioning

confidence: 97%

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Inheritance of resistance to late blight (Phytophthora infestans) in potato

2006

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Under epiphytotic conditions for late blight in spring seasons, data were recorded on its intensity four times at 4 days intervals from the start of the disease in the field, in 114 (19 females · 6 males) progenies and their parents planted in randomized complete block design in the years 2005 and 2006. Regression and stepwise regression analysis showed that observations during the rapidly increasing phase of disease between initial and last phase of disease are more important than the observations at initial and last phase of the disease. Combining ability analysis on a sub-set of 68 progenies showed that the additive component of genetic variance was more important than the non-additive component of variance in inheritance of quantitative resistance to late blight. The per se performance of the parents does give an idea about their general combining ability (GCA). However, selection of parents based on their GCA will be very useful for breeding for quantitative resistance to late blight. Parents JX 90, JF 4841, CP 3356, CP 1358, CP 3290, JN 1197 and CP 3125 were found to have good GCA for quantitative resistance for late blight and the best six crosses for late bilght resistance based on mean performance involved parents with good combining ability only.

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Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 97%

Inheritance of resistance to late blight (Phytophthora infestans) in potato

2006

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“…de Bary), potato viruses Y and X, and potato wart fungus (race D1 and some virulent pathotypes) (Chrzanowska 2000;Douches et al 2002Douches et al , 2004Flis et al 2005;Przetakiewicz 2010;Tatarowska et al 2011;. Therefore, this cultivar was widely used in many research and breeding programs in Europe and in both Americas (Ahmadvand 2013;Bendahmane et al 2000;Bisognin et al 2002;Haynes et al 1998;Polkowska-Kowalczyk et al 2011;Querci et al 1995). This cultivar is still cultivated in Poland, due to its high level of field resistance to late blight.…”

Section: Introductionmentioning

confidence: 94%

R2-like Gene Contributes to Resistance to Phytophthora infestans in Polish Potato Cultivar Bzura

et al. 2015

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Potato cultivar Bzura bred in 1986 is one of the few European cultivars outstanding in high level of durable resistance to late blight, but its resistance has not been characterized. The presented study was aimed at clarifying bases of durable resistance in Bzura by testing its resistance and resistance in progeny individuals. In ten-year field experiment Bzura was significantly more resistant than mid-resistant standards Escort and Robijn, and only slightly less resistant than highly resistant Sárpo Mira. Bzura expressed also high resistance in detached leaflet tests when inoculated with specific isolates of Phytophthora infestans. It was found in Bzura progeny that this race-specific resistance segregated in 1:1 ratio and is governed by a major resistance gene R2-like. However, the long-lasting field resistance observed in Bzura could be explained by combination of R2-like gene and specific genetic background of this cultivar rather than by this gene exclusively.

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“…Wild tuber-bearing potatoes from central and south America have been used as the primary sources of resistance to P. infestans (Glendinning, 1983;van Soest et al, 1984;RiveraPen˜a, 1990;Colon et al, 1995a;Trognitz et al, 2002). Several studies have recently demonstrated the geographic (Haynes et al, 1998;Forbes et al, 2005) and temporal (Colon et al, 1995b;Gru¨n-wald et al, 2002a) stability of quantitative resistance, which can result in significant reductions in fungicide use (Gru¨nwald et al, 2002b).…”

Section: Introductionmentioning

confidence: 95%

Host Specialization not Detected Among Isolates of the EC-1 Lineage of Phytophthora infestans Attacking Wild and Cultivated Potatoes in Peru

Garry¹,

Salas

Forbes

et al. 2005

Eur J Plant Pathol

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To determine whether populations of Phytophthora infestans attacking wild and cultivated potatoes in the highlands of Peru are specialized on their hosts of origin, we characterized isolates using several neutral markers, metalaxyl resistance and for aggressiveness in a detached leaf assay. One hundred and fifty-three isolates were collected from the northern and central highlands of Peru from different potato cultivars (both modern and native cultivars) and from different species of wild, tuber-bearing potatoes. All the isolates analyzed belonged to one of four clonal lineages that had been described previously in Peru: EC-1, US-1, PE-3 and PE-7. The EC-1 lineage (n = 133) was dominant and present in similar frequencies on wild and cultivated potatoes. PE-3 (n = 14) was found primarily on cultivated potatoes, with only one isolate coming from a wild host. US-1 (n = 2) and PE-7 (n = 4) were rare; all but one (PE-7) occurred on wild potatoes. Isolates from the EC-1 lineage from modern cultivars were compared in three separate detached leaf inoculation assays with EC-1 isolates from the wild potato species S. sogarandinum, S. bill-hookerii or S. huancabambense, respectively. No significant interactions between isolate type (from wild or cultivated potato) and host type (wild or cultivated) were measured for any assay. It appears that the pathogen genotypes in the EC-1 lineage indiscriminately attack both wild and cultivated tuber-bearing solanaceous hosts in Peru, and breeders should be able to select for resistance using the common EC-1 lineage.

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Phenotypic stability of resistance to late blight in potato clones evaluated at eight sites in the United States

Cited by 48 publications

References 32 publications

Inheritance of resistance to late blight (Phytophthora infestans) in potato

Inheritance of resistance to late blight (Phytophthora infestans) in potato

R2-like Gene Contributes to Resistance to Phytophthora infestans in Polish Potato Cultivar Bzura

Host Specialization not Detected Among Isolates of the EC-1 Lineage of Phytophthora infestans Attacking Wild and Cultivated Potatoes in Peru

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