Laboratory studies of potato tuber resistance to infection by Phytophthora infestans

Walmsley‐Woodward, Dianne J.; Lewis, B.

doi:10.1111/j.1744-7348.1977.tb00628.x

Cited by 13 publications

(3 citation statements)

References 8 publications

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“…Some studies have shown that resistance to initial infection of potato eyes and lenticels of tubers gradually increased as the growing season progressed and the tubers matured (Lapwood 1967;Walmsley-Woodward and Lewis 1977;Malcolmson 1981;Stewart et al 1983;Bjor 1987). Grinberger et al (1995) further reported that tuber blight incidence and severity were strongly affected by tuber age: an increase in tuber resistance to blight during vegetation (tested between 48 and 95 days after planting) and in storage (tested between 118 and 208 days after planting) was observed.…”

Section: Discussionmentioning

confidence: 92%

Resistance of Potato Tubers to a Highly Aggressive Isolate of Phytophthora infestans in Relation to Tuber Age

2006

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The goal of these studies was to evaluate the influence of tuber age on the expression of resistance to Phytophthora infestans in five selected potato genotypes (three cultivars and two clones) varying in tuber resistance and maturity type, and also to select the best time for testing potato tubers for resistance to blight. Resistance was evaluated by inoculating whole tubers at 13 different times as they progressively aged during growth and storage. Tuber age was expressed as weeks after planting. Tubers were rated from week 13 (late July) until week 43 (late February) for tubers planted on 27-28 April, over three consecutive seasons (2001)(2002)(2003). Analysis of variance performed on tuber resistance data showed significant effects of genotype, year and tuber age. Significant contributions of genotype × year, genotype × tuber age, year × tuber age and year × genotype × tuber age interactions were also detected. A slight increase in tuber resistance with tuber age was observed for cvs Bzura, Sokół and Irga, while the opposite trend was observed for the clones 97-A-63 and DG 92-227. Changes in tuber resistance with age of tested genotypes were not related to their maturity type. The period of most stable expression of tuber resistance was observed when tubers were tested between the 16th and 28th week after planting.

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Section: Discussionmentioning

confidence: 92%

Resistance of Potato Tubers to a Highly Aggressive Isolate of Phytophthora infestans in Relation to Tuber Age

2006

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“…The results reported here show that immature tubers are more prone than mature tubers to infection by P. infestans during bulk washing. Walmsley-Woodward & Lewis (1977) found that the resistance of eyes and lenticels of tubers of several cultivars to infection by P. infestans, lifted at intervals of two weeks from mid-July onwards, Research 40 (1997) gradually increased as the tubers matured. It follows therefore that washing stocks of immature tubers before mature tubers may reduce the spread of tuber blight if the wash water is not changed between stocks.…”

Section: Discussionmentioning

confidence: 97%

The infection of potatoes byPhytophthora infestans during simulated washing and its control using a hot water treatment

Rw¹,

Bain²,

Sj³

1997

Potato Res

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“…Due to prolonged infection risk from partly infected foliage, tuber resistance is regarded as being particularly relevant in cultivars resistant to P. infestans . There are reports that P. infestans can also enter tubers via stolons (Zeck, 1957;Walmsley-Woodward & Lewis, 1977). Later their resistance decreases, but rises again with advancing tuber maturity.…”

Section: Tuber Resistance and The Potato -P Infestans Pathosystemmentioning

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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Laboratory studies of potato tuber resistance to infection by Phytophthora infestans

Cited by 13 publications

References 8 publications

Resistance of Potato Tubers to a Highly Aggressive Isolate of Phytophthora infestans in Relation to Tuber Age

Resistance of Potato Tubers to a Highly Aggressive Isolate of Phytophthora infestans in Relation to Tuber Age

The infection of potatoes byPhytophthora infestans during simulated washing and its control using a hot water treatment

Breeding potato cultivars with tubers resistant toPhytophthora infestans

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