Development of a molecular marker associated with Verticillium wilt resistance in diploid interspecific potato hybrids

Bae, J.; Halterman, Dennis; Jansky, Shelley

doi:10.1007/s11032-008-9156-8

Cited by 40 publications

(28 citation statements)

References 30 publications

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“…Recently, quantitative PCR has been developed and is eYcient and speciWc to V. dahliae Bae et al 2007). There has been an eVort to develop molecular markers to apply marker assisted selection for VW resistance in potato (Simko et al 2003(Simko et al , 2004Bae et al 2008). Therefore in near future, these methods should be considered for the identiWcation of VW resistant clones in early generations.…”

Section: Discussionmentioning

confidence: 99%

“…The eYciency of early generation selection results from identifying and retaining superior genotypes before the population size has been dramatically reduced (Caligari et al 1986). Stringent early generation selection is usually ineVective with complex agronomic tuber characteristics because of their low heritabilities and because visual evaluation is inaccurate (Anderson and Howard 1981;Brown et al 1987;Love et al 1997). As a compromise, Tai and Young (1984) suggested using a moderate intensity of selection in the seedling generation.…”

Section: Introductionmentioning

confidence: 99%

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The potential for early generation selection to identify potato clones with resistance to Verticillium wilt

2008

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Verticillium wilt (VW) of potato, caused primarily by the fungus Verticillium dahliae, results in yield loss and is therefore an important soil-borne disease. Resistance to VW exists in potato germplasm and is used by breeders during cultivar development. Breeders could make more rapid progress toward the development of VW resistant clones if they had an eVective early generation selection strategy. The purpose of this study was to determine whether selection for VW resistance could be carried out in the Wrst tuber generation on single hills. One hundred and Wfty-two clones from 19 families were planted as single hills on a V. dahliae-infested Weld. Each plant was scored for vine maturity, VW symptom expression, yield, stem colonization (colony forming units (cfu), in dried basal stem segments) and incidence (percent infected stems). In the second clonal generation, which consisted of replicated four-hill plots, stem colonization scores and incidence values were used to identify clones which were more resistant than a moderately resistant cultivar and others which were more susceptible than a susceptible cultivar. The eYciency and reliability of the single-hill selection strategy, based on symptoms and yield, was then determined by comparison to the four-hill results. We determined that the best single-hill selection strategy was negative selection (discard clones with the lowest performance) with low stringency, based on yield.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The potential for early generation selection to identify potato clones with resistance to Verticillium wilt

2008

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“…This would extend the reproductive fitness of the host species over others that are more susceptible to rapid pathogen evolution. Bae et al (2008) have found that Verticillium wilt resistance in S. chacoense-derived potato hybrids is linked to a homolog of the tomato (Solanum lycopersicum L.) Ve gene. In tomato, the Ve gene encodes a receptor-like protein that has been used successfully to control this fungus for more than 60 yr, suggesting that evolution of the pathogen to overcome Ve recognition carries a high fitness penalty on the pathogen (Kawchuk et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Wild and Cultivated Potato (Solanum sect. Petota) Escaped and Persistent Outside of its Natural Range

Simon¹,

Xie²,

Clausen³

et al. 2010

Invasive plant sci. manag.

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Wild potato contains about 100 species that are native to the Americas from the southwestern United States to central Chile and adjacent Argentina, Uruguay, Paraguay, and southern Brazil. We report the occurrence of naturalized populations of the wild potato Solanum chacoense in seven sites in southern Australia, eastern China, England, New Zealand, the eastern United States, central Peru, and east-central Argentina. Modeling similar climatic niches on the basis of the distribution of S. chacoense from South America shows that observations of naturalized S. chacoense overlap with predicted areas. A literature review reveals that although S. chacoense possesses traits typical of an invasive species, all populations presently appear to be contained near their site of introduction.

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“…Such a marker has recently been developed (Bae et al 2008). However, it may not be broadly applicable in diverse breeding populations.…”

Section: Discussionmentioning

confidence: 99%

Identification of Verticillium Wilt Resistance in U.S. Potato Breeding Programs

Jansky

2009

Am. J. Pot Res

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Verticillium wilt (VW), caused mainly by the soil-borne fungus V. dahliae, is a persistent and serious problem in potato production. Host-plant resistance offers an attractive control strategy, but most major cultivars are susceptible to VW. Resistance to VW was evaluated in 14 advanced clones from U.S. potato breeding programs and 11 cultivars. The two objectives of this study were to 1) determine the extent to which VW resistance exists in advanced selections in U.S. potato breeding programs and 2) test a selection strategy based on multiple measures of resistance. The three measures of resistance used in this study were symptom expression in the field, colonization of stem sap, and numbers of propagules in senescent stems. Resistant clones had low scores, but susceptible clones were highly variable for all three measures. An effective selection strategy utilizing all three measures of assessment can be used to separate true resistance from tolerance as follows: first, identify clones with low symptom expression, then measure sap colonization, and finish by establishing propagule levels in senescent stems. Based on this approach, breeders will be able to identify VW resistant, and not just VW tolerant, germplasm for future breeding efforts.Resumen La marchites por Veticillium (VW), causada principalmente por el hongo del suelo V. dahliae, es un problema persistente y serio en la producción de papa. La resistencia de la planta hospedera es una estrategia de control atractiva, pero la mayoría de las variedades principales son susceptibles a VW. Se evaluó la resistencia a VW en 14 clones avanzados de programas de mejoramiento de papa de E.U. y 11 variedades. Los dos objetivos de este estudio fueron 1) determinar hasta que punto existe resistencia a VW en las selecciones avanzadas de programas de mejoramiento de papa de E.U. y 2) probar una estrategia de selección basada en múltiples medidas de resistencia. Las tres medidas de resistencia usadas en este estudio fueron la expresión de síntomas en el campo, colonización de la savia del tallo, y el número de propágulos en tallos senescentes. Los clones resistentes tuvieron registros bajos, pero los susceptibles fueron altamente variables para las tres medidas. Se puede emplear una estrategia de selección efectiva utilizando las tres medidas de evaluación para separar la verdadera resistencia de la tolerancia de la siguiente manera: primero, identificar clones con baja expresión de síntomas, después medir la colonización de la savia, y terminar con el establecimiento de los niveles de propágulos en tallos senescentes. Con base en este enfoque, los mejoradores estarán en capacidad para identificar germoplasma con resistencia a VW, y no solamente tolerancia, en esfuerzos de mejoramiento a futuro.

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Development of a molecular marker associated with Verticillium wilt resistance in diploid interspecific potato hybrids

Cited by 40 publications

References 30 publications

The potential for early generation selection to identify potato clones with resistance to Verticillium wilt

The potential for early generation selection to identify potato clones with resistance to Verticillium wilt

Wild and Cultivated Potato (Solanum sect. Petota) Escaped and Persistent Outside of its Natural Range

Identification of Verticillium Wilt Resistance in U.S. Potato Breeding Programs

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