The relationship between bruising and specific gravity in some potato varieties

Killick, Richard; Macarthur, A. W.

doi:10.1007/bf02356263

Cited by 5 publications

(3 citation statements)

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“…All other characteristics being equal, it makes sense for a grower to choose a cultivar that is soft rot or bruise tolerant over one that is more susceptible. High specific gravity cultivars are of particular value to food processors but are generally more prone to blackspot bruising (Killick & MacArthur 1980). Our research revealed that the high specific gravity processing potato cultivar, 'Fianna', is commercially desirable because it is tolerant to blackspot bruising and relatively tolerant to bacterial soft rot.…”

Section: Discussionmentioning

confidence: 94%

“…Procedures for mechanised harvesting of potato tubers that cause minimal damage have been outlined in detail by Smittle et al (1974) and Brook (1996). In addition to dry matter content, other tuber factors can also determine the incidence and severity of bruising including potato cultivar, tuber shape, tuber size, tuber maturity, skin thickness, and tuber temperature and hydration levels (Sawyer & Collin 1960;Killick & MacArthur 1980;Shetty et al 1998). Development of soft rot is greatly enhanced in a low-oxygen environment that can occur when tubers are wet (Hiller & Thornton 1993), so it is important that tubers are stored in well-ventilated conditions at c. 12°C.…”

Section: Discussionmentioning

confidence: 97%

“…Variation of tuber-specific gravity within a potato cultivar may have more of an effect on blackspot bruising than variations in specific gravity between cultivars (Killick & MacArthur 1980;Storey & Davies 1992). this paper reports research to assess the resistance of tubers of 10 potato cultivars grown at one site to soft rot caused by E. carotovora subsp.…”

Section: Introductionmentioning

confidence: 97%

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Effects of specific gravity and cultivar on susceptibility of potato (Solanum tuberosum) tubers to blackspot bruising and bacterial soft rot

Wright¹,

Triggs

Anderson

2005

New Zealand Journal of Crop and Horticultural Science

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Ten potato (Solanum tuberosum) cultivars were assessed for resistance to bacterial soft rot caused by Erwinia carotovora subsp. atroseptica, and to blackspot bruising. Specific gravities of individual potato tubers varied within each cultivar and between cultivars. Within all 10 cultivars tested, as tuber-specific gravity increased, the severity of bacterial soft rot decreased, and the severity of bruising increased. Among the seven New Zealand-bred cultivars, mean soft rot susceptibilities lay along a continuum, with cultivars having higher mean soft rot losses as mean specific gravity increased. Two of the three overseas cultivars exhibited very different responses from those bred in New Zealand. In contrast, for blackspot bruising, six of the New Zealand-bred cultivars and two overseas cultivars lay approximately on a continuum of increasing mean bruise score as mean specific gravity increased, similar to the within-cultivar relationships. The remaining New Zealand-bred cultivar and the overseas cultivar 'Fianna' were quite different, having much lower m ean bruise scores than predicted by the trend line of the other cultivars. 'Fianna' in particular exhibited both low bruising and low soft rot incidence in this experiment.

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Section: Discussionmentioning

confidence: 94%