A method of assessing potato seedling progenies for resistance to the white potato cyst nematode

1981 ◽  
Vol 24 (1) ◽  
pp. 101-103 ◽  
Author(s):  
M. S. Phillips
Keyword(s):  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Potato Seedling ◽  
White Potato

Assessing potato seedling progenies for resistance to the white potato cyst-nematode

1982 ◽  
Vol 99 (1) ◽  
pp. 67-70 ◽  
Author(s):  
M. S. Phillips ◽  
M. F. B. Dale
Keyword(s):  
North Carolina ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Breeding Value ◽  
Potato Seedling ◽  
White Potato ◽  
Seedling Test ◽  
The Mean ◽  
Half Diallel

SUMMARYA bulk seedling test is described which can be applied shortly after completion of a crossing programme. The test assesses resistance to G. pallida in progeny derived from crossing programmes involving S. luberosum, S. vernei and S. tuberosum spp. andigena. It provides good estimates of both the mean level of resistance within progenies and the breeding value of the parents. The test was applied to a crossing schedule involving a half-diallel and a North Carolina 2 design utilizing a range of material. The results and their implications are discussed.

An investigation of resistance to the white potato cyst-nematode

1982 ◽  
Vol 99 (2) ◽  
pp. 325-328 ◽  
Author(s):  
M. F. B. Dale ◽  
M. S. Phillips
Keyword(s):  
Solanum Tuberosum ◽  
Major Gene ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Globodera Pallida ◽  
Screening Methods ◽  
Inheritance Of Resistance ◽  
White Potato

SUMMARYThe inheritance of resistance to Globodera pallida was studied in seedling progenies derived from Solanum tuberosum ssp. andigena CPC 2802 (H3) and S. vernei and compared with resistance to G. rostochiensis derived from S. tuberosum ssp. andigena CPC 1673(H1). The resistance of CPC 2802 was originally thought to be due to a major gene (H3), but results presented here demonstrate that it and that derived from S. vernei are inherited in a similar manner quite distinct from the major gene inheritance from CPC 1673 (HI). It is concluded that the resistances derived from CPC 2802 and S. vernei are both polygenic in nature. These findings are discussed in relation to breeding policy and screening methods.

scholarly journals Monosaccharide constituents of potato root exudate influence hatching of the white potato cyst nematode

2021 ◽  
Author(s):  
Christopher A Bell ◽  
Waddah Mobayed ◽  
Catherine J Lilley ◽  
Peter Urwin
Keyword(s):  
Root Exudate ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Globodera Pallida ◽  
Parasitic Nematodes ◽  
Infested Soil ◽  
Plant Parasitic Nematodes ◽  
Potato Root ◽  
White Potato ◽  
Management Schemes

Plants secrete a large array of compounds into the rhizosphere to facilitate interactions with their biotic environment. Some of these exuded-compounds stimulate the hatching of obligate plant-parasitic nematodes, ultimately leading to a detrimental effect on the host plant. Determining these cues can help to provide new mechanisms for control and aid nematode management schemes. Here we show that glucose, fructose and arabinose, which are all present in potato root exudate (PRE), induce hatching of white potato cyst nematode (Globodera pallida) eggs whereas five other PRE-sugars had no effect. Although these monosaccharides resulted in significant hatching none induced the same level as PRE, suggesting that other components, possibly in combination, contribute to stimulation of nematode hatching. Glucose, but not arabinose or fructose, was also observed to attract juvenile G. pallida, indicating that these hatch-inducing components can have different roles in different stages of the life cycle. Applying a solution of these monosaccharides to G. pallida-infested soil pre-potato planting initiated hatching in the absence of a host. Host absence resulted in nematode mortality and a reduction in the G. pallida population. Therefore, subsequent invasion of the crop post-planting was also reduced, compared to untreated soil. Our data suggest that monosaccharide components of PRE play an important role in the hatching and attraction of G. pallida. As a result the hatch-inducing monosaccharides can be applied as a pre-planting treatment to induce hatching and reduce subsequent infection rates.  

Novel Bioassay Demonstrates Attraction of the White Potato Cyst Nematode Globodera Pallida (Stone) to Non-volatile and Volatile Host Plant Cues

2012 ◽  
Vol 38 (6) ◽  
pp. 795-801 ◽  
Author(s):  
Kevin Farnier ◽  
Marie Bengtsson ◽  
Paul G. Becher ◽  
Johanna Witzell ◽  
Peter Witzgall ◽  
...  
Keyword(s):  
Host Plant ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Globodera Pallida ◽  
White Potato

General and specific combining ability of potato parents for resistance to the white potato cyst nematode (Globodera pallida)

1979 ◽  
Vol 92 (1) ◽  
pp. 255-256 ◽  
Author(s):  
M. S. Phillips ◽  
Linda A. Wilson ◽  
J. M. S. Forrest
Keyword(s):  
Combining Ability ◽  
Potato Breeding ◽  
General Combining Ability ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Globodera Pallida ◽  
Specific Combining Ability ◽  
Breeding Programme ◽  
White Potato ◽  
Solanum Vernei

The practical value of obtaining estimates of general combining ability (GCA) from data accumulated in a breeding programme has been discussed by Gilbert (1967). In this study use has been made of data collected during the course of screening potato breeding material, derived from Solanum vernei Bitt. et Wittm., for resistance to the white potato cyst nematode, Qlobodera pallida (Stone) Mulvey & Stone, to assess the relative contributions of GCA and specific combining ability (SCA) by the procedure described by England (1974) which is based on Gilbert's (1967) method.

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