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  • Articles  (18)
  • Solanum tuberosum L.  (18)
  • 2010-2014
  • 2000-2004  (18)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
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  • Articles  (18)
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Keywords
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  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
  • Biology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A novel method for investigating the uptake and distribution of radiolabelled imazethapyr in potato tubers (2000)
    Springer
    Potato research 43 (2000), S. 203-209 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; Storite Clear ; Storite Flowable ; radionuclide ; scintillation counting ; sprout suppression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The use of imazethapyr as a sprout suppressant in potatoes has been investigated. Novel radionuclide techniques were developed to establish the patterns of uptake and movement of imazethapyr in potatoes. Protocols for tissue analysis were established to homogenise potato tuber tissue samples, enabling radiolabel recovery by liquid scintillation counting to approach 100%. The movement of imazethapyr was also examined in the presence of an acidic formulation of thiabendazole which caused increased uptake. The movement of imazethapyr within the tuber was also influenced by pH and ion trapping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358080
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  • 2
    Electronic Resource
    Electronic Resource
    Expression and activity of antioxidant enzymes during potato tuber dormancy (2000)
    Springer
    Potato research 43 (2000), S. 383-393 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; plant development ; antioxidant genes ; gene expression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The expression of antioxidant genes has been analyzed in a potato plant and during tuber dormancy. Manganese superoxide dismutase (MnSOD), cytosolic copper and zinc superoide dismutase (Cu/ZnSOD), catalase class II, cytosolic ascorbate peroxidase (APX) and glutathione peroxidase (GPX) are expressed at the RNA level in all the contexts analyzed. By contrast, the expression of the iron superoxide dismutase (FeSOD) and plastidic Cu/ZnSOD seems to be limited to green tissues, as shown by northern blots and native gels. A complex DAB-peroxidase isozyme pattern (using diaminobenzidine as substrate) has been observed in different developmental contexts analyzed, but hardly observed in tubers. During tuber dormancy, MnSOD and cytosolic Cu/ZnSOD activity was relatively constant in both Désirée and Bintje varieties while catalase activity decreases. Moreover, tuber dormancy breakage did not involve significant changes in the activity of these enzymes. On the basis of these results, the possible link between active oxygen species (AOS) metabolism and dormancy is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02360542
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  • 3
    Electronic Resource
    Electronic Resource
    Accumulation of mineral elements in tuber periderm of potato cultivars differing in susceptibility to common scab (2000)
    Springer
    Potato research 43 (2000), S. 107-114 
    Details
    ISSN: 1871-4528
    Keywords: actinomycetes ; resistance ; scab incidence ; Solanum tuberosum L. ; Streptomyces scabies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Concentrations of Ca, P, K, Mg, Al, Fe, Mn, Cu and Zn were determined in healthy tuber peelings of cultivars less (Karin, Santé and Symfonia) and more (Agria, Désirée and Tomensa) susceptible to common scab when grown at two sites that differed in the level of scab incidence. The accumulation of some elements was significantly influenced by site, year, cultivar, maturity and the age of tuber periderm. At both sites, Ca and P in periderm tissue declined but Mg increased during the growing season. The Ca/P ratios in tuber periderm of all cultivars greatly decreased 83 days after planting. Concentrations of mineral elements measured at harvest may not reflect conditions present during the infection period, and consequently may not be related to scab incidence or severity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357951
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  • 4
    Electronic Resource
    Electronic Resource
    Development of amylose-free (amf) monoploid potatoes as new basic material for mutation breeding in vitro (2000)
    Springer
    Potato research 43 (2000), S. 179-189 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; prickle pollination ; ploidy level ; flow-cytometry ; adventitious shoots ; in vitro tuber induction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary For the induction and selection of double mutants with altered starch composition, a uniform (homohistont) amylose-free (amf) monoploid as basic plant is of vital importance. Therefore, newamf monoploids had to be developed via prickle pollination. And 26 monoploids were obtained which were screened in vitro for vigour, leaf size and for the percentage of monoploid cells. The number of monoploid cells was underestimated at about 28%. Seven vigorous monoploids were tested in vitro for tuberization capacity, which varied from 0 to 100%. After regeneration in vitro, 0 to 3.7 adventitious shoots per leaf explant were formed. The tuberization capacity of these shoots varied from 0 to 48. Twoamf monoploids were selected which were vigorous and tuberized well in vitro. They are the basis for the application of an in vitro mutation breeding protocol that should lead to the induction and selection of new starch mutants in potato.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357958
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  • 5
    Electronic Resource
    Electronic Resource
    Slug damage and control of field slug (Deroceras reticulatum (Müller)) by carvone in stored potatoes (2000)
    Springer
    Potato research 43 (2000), S. 253-261 
    Details
    ISSN: 1871-4528
    Keywords: laboratory tests ; storage ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary After a wet autumn and harvesting under wet conditions, slugs brought into potato stores via clods and soil adhering to tubers may cause substantial damage by feeding on the tubers. A carvone sprout inhibitor, Talent®, applied in the potato stores at a dose of 50 ml per tonne potatoes, controlled slugs within a few days. A dose of 25 ml carvone was insufficient. Using a laboratory box test, the slug (Deroceras reticulatum) affected only wounded tubers and, although slime was present on the unwounded potatoes, they were not damaged by slugs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358084
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  • 6
    Electronic Resource
    Electronic Resource
    Reduction of potato damage during grading by radiant heating (2000)
    Springer
    Potato research 43 (2000), S. 273-278 
    Details
    ISSN: 1871-4528
    Keywords: cold storage ; store management ; potato handling ; tuber temperature ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of using radiant heat to quickly warm potatoes and reduce damage in handling after cold storage was investigated. Two treatments were investigated: tubers dropped 350 mm with no radiant heat applied, and tubers dropped with radiant heat applied. Both treatments were compared with a control set of tubers which were taken directly out of store. The mean damage index per tuber was significantly reduced following radiant heat treatment although there were cultivar and size variations. The temperature profile under radiant heat was also measured which showed an increase in the outside flesh temperature of 8–12°C depending on tuber colour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358086
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  • 7
    Electronic Resource
    Electronic Resource
    Expression of the chemically inducible maize GST-27 promoter in potato (2000)
    Springer
    Potato research 43 (2000), S. 335-345 
    Details
    ISSN: 1871-4528
    Keywords: chemical inducible gene expression ; glutathione S-transferase ; Solanum tuberosum L. ; herbicide safener ; tuber
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Chemically inducible gene regulation systems provide a mechanism for a temporal control of expression of transgenes. In this study expression from the herbicide safener inducible maize GST-27 promoter was tested in potato, with the aim of using this to provide inducible expression of transgenes implicated in dormancy control. A binary vector comprising 3.8 kb of the GST-27 promoter was fused to the β-glucuronidase (GUS) reporter gene and transformed into potato. Application of the chemical inducer elevated the expression of GUS up to 40 fold in leaf tissue. However in stems, roots and tubers the GST-27 promoter caused high levels of expression of GUS in the absence of safener, demonstrating that in these tissues it acts as a constitutive promoter. A deleted promoter region of the GST-27 promoter displayed a similar expression pattern. Analysis of GUS activity in dormant and sprouting tubers showed that the GST-27 promoter was a strong constitutive promoter throughout the tuber life cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02360539
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  • 8
    Electronic Resource
    Electronic Resource
    Subcutaneous tissue discoloration in ware potatoes. 2. Impact measured by an instrumented sphere (2000)
    Springer
    Potato research 43 (2000), S. 225-238 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; damage ; bruising ; blackspot ; handling ; velocity change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Potatoes are exposed to mechanical forces which can lead to subcutaneous tissue discoloration resulting in losses. We investigated the number and intensity of impacts in different phases of representative Dutch ware potato handling chains using an instrumented sphere (IS). Other questions we asked were, to which drop height onto a defined surface do measured impacts correspond, and what is the relation between the number of impacts and damage? Close relationships between peak acceleration and velocity change for different drop heights were found for various cushioning materials, thus allowing interpretation of impact measurements in terms of drops. The IS recorded c. 340 impacts exceeding 30g. The contribution to the total number of impacts was 11% for Harvest, 0% for Storage, 10% for Transport and 79% for Packaging. The number and intensity of impacts correlated well with the amount of subcutaneous tissue discoloration. It is concluded that the produce-friendliness of the handling chains can be improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358082
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  • 9
    Electronic Resource
    Electronic Resource
    The effect of boron on calcium uptake and growth in micropropagated potato plantlets (2000)
    Springer
    Potato research 43 (2000), S. 287-295 
    Details
    ISSN: 1871-4528
    Keywords: nutrient analysis ; culture media ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Boron (B) requirements differ widely among plant species and the concentration range between toxicity and deficiency is less for B than for any other nutrient. Excess B can adversely affect calcium (Ca) uptake and plant growth. Potato cvs Bintje and Norland plantlets were micropropagated on Murashige & Skoog (MS) nutrient medium, supplemented with 3 (MS control level) or 9 mM Ca, and a range of H3BO3 levels (0.025 to 0.300 mM B). Medium B levels of 0.100 and 0.300 mM decreased Ca content in leaves and shoots of cv. Norland, but not Bintje. Medium B level of 0.025 mM, which is 25% of the control MS level, enhanced Ca uptake in cv. Norland and did not compromise normal plantlet growth in either cultivar. This lower H3BO3 level (0.025 mM B), and a B-free gelling agent such as Gelrite, could be used for micropropagation of potato and possibly other species susceptible to Ca defifiency disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358088
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  • 10
    Electronic Resource
    Electronic Resource
    A SWACROP-based potato root water-uptake function as determined under tropical conditions (2000)
    Springer
    Potato research 43 (2000), S. 19-29 
    Details
    ISSN: 1871-4528
    Keywords: root-water uptake ; modeling ; SWACROP ; Ferralsols ; tropics ; Cuba ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The SWACROP root-water uptake function for potatoes was determined in the 1994–95 crop season on a Ferralsol in Havana province, west Cuba. The maximum pressure-heads under which water is optimally extracted by potato roots were very similar to the original Feddes function. Nevertheless, the anaerobiosis point and the wilting point pressure-head in both functions were not in agreement. However, the simulated values of soil water contents in the 0–40 cm soil depth by performing SWACROP runs in the 1995–96 potato crop season using both functions were very similar. The original Feddes function seems to be good enough for predicting soil water contents in the tropics and no specific other functions need to be developed for any particular soil or climate condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358510
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  • 11
    Electronic Resource
    Electronic Resource
    Nutritional value of potato tubers from field grown plants treated with deltamethrin (2000)
    Springer
    Potato research 43 (2000), S. 43-48 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; Decis® ; Colorado potato beetle ; tuber quality ; dry matter content
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tubers showed changes in their nutritional value caused by the treatment of the plants with the insecticide deltamethrin. The level of starch was increased in comparison with control tubers; but the amylose percentage was not affected. In contrast, the total protein content decreased in tubers from treated plants, whereas free amino acids level and ascorbic acid content increased. The results showed that the changes in the tubers caused by the treatment of potato plants with deltamethrin did not adversely affect the nutritional value of the progeny tubers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358512
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  • 12
    Electronic Resource
    Electronic Resource
    Assessment of new potato cultivars in Europe: a survey (2000)
    Springer
    Potato research 43 (2000), S. 97-106 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; National List ; Recommended Trials ; growing crop ; tuber ; yield ; quality ; disease ; nematodes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In 1994, a postal questionnaire was sent to 41 institutes in 27 countries to obtain information on the national potato cultivar testing programmes in Europe. Responses were received from 19 countries. Foliage, tuber and yield characteristics were assessed in all countries but the number of sites and replicated varied considerably between the countries. Cooking and taste qualities were measured in most countries using relatively simple methods but processing characteristics were tested less commonly. Susceptibility to the most common diseases, i.e. late blight, common scab, leafroll and PVYo, was assessed in over 75% of the countries while resistance to another 21 disease and 4 potato cyst nematode pathotypes was assessed by various countries, depending on their national importance. Many of the assessments were based on records of natural infection although controlled inoculation tests were done more frequently for the more important diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357950
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  • 13
    Electronic Resource
    Electronic Resource
    Fertilizer management impacts on stand establishment, disease, and yield of Irish potato (2000)
    Springer
    Potato research 43 (2000), S. 49-59 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; soil fertility ; soluble salts ; plant spacing ; Rhizoctonia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Excessive fertilizer application in North Carolina, USA results in high residual soil levels of P, K and total soluble salts in potato fields. Our objectives were to determine the salt sensitivity of three common cultivars (Atlantic. Snowden and Superior), and the effects of planting density and fertilization on stand establishment, soilborne disease, and yield. Greenhouse results suggest that potato growth and emergence, but not shoot initation, are reduced by high salinity. On a Portsmouth fine sandy loam, high fertilizer rates did not reduce stands of cv. Atlantic in the field in 1996 or 1997. Excess N resulted in moreRhizoctonia stem canker in 1996, and lower yields at the lower planting density in 1997. Yield compensation for reduced plant density occurred in 1997 at the lower N rates (56 and 112 kg N ha−1) and at the high PK rate (49 kg P and 139 kg K ha−1).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358513
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  • 14
    Electronic Resource
    Electronic Resource
    Interaction between jasmonic and gibberellic acids on in vitro tuberization of potato plantlets (2000)
    Springer
    Potato research 43 (2000), S. 83-88 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; potato tuberization ; growth regulators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A reverse of the delaying effect of gibberellic acid (GA3) was observed in in vitro tuberization of potato plantlets when the medium contained 0.8×10−5 M jasmonic acid (JA). The promoting effect of JA seemed to be correlated with the initial absence of growing roots, probably through direct activity of JA in microtuber-producing buds in the stoloniferous shoots. This is based on the fact that JA did not inhibit root growth a posteriori. Endogenous gibberellins (GAs) synthesized by roots did not interfere with the previous activity of JA in tuberization. The absence of a JA promoting-effect on tuberization of previously-rooted plantlets could be related to the capacity of potato roots to synthesize endogenous GAs which might antagonize the JA effect on buds of stoloniferous shoots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358516
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  • 15
    Electronic Resource
    Electronic Resource
    Bacillus thuringiensis cry1Ab gene confers resistance to potato againstHelicoverpa armigera (Hubner) (2000)
    Springer
    Potato research 43 (2000), S. 143-152 
    Details
    ISSN: 1871-4528
    Keywords: transgenic plants ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Helicoverpa armigera is one of the important insect pests adversely affecting the yield of potatoes in India. A synthetic gene encoding the insecticidal crystal protein (Cry1Ab) ofBacillus thuringiensis (Bt) has been introduced into five genotypes of potato usingAgrobacterium tumefaciens. Southern analysis of DNA from transgenic plants confirmed the integration and copy number of the transgene. Double-antibody quantitative sandwich ELISA analysis demonstrated high levels of Cry1Ab protein expression in transgenic plants. Insect bioassays on the leaves of transgenic plants showed considerable protection against the larvae ofH. armigera in terms of leaf area consumed and larval weight reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357955
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  • 16
    Electronic Resource
    Electronic Resource
    Subcutaneous tissue discoloration in ware potatoes. 1. A chain analysis in the Netherlands (2000)
    Springer
    Potato research 43 (2000), S. 211-224 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; damage ; bruising ; impact ; blackspot ; handling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In the chain of handling operations from harvesting to packaging inclusive, potatoes are exposed to many brief mechanical forces (impacts) and to long-term pressure. Impact and pressure can lead to subcutaneous tissue discoloration causing qualitative and quantitative losses. We investigated the characteristics of construction and utilization of representative Dutch ware potato handling chains and found that the number and height of drops appeared to be too high, the use of cushioning materials insufficient and the speed of the transporting parts too high and not in balance with each other. The contribution to the total amount of subcutaneous tissue discoloration was 16% for the harvesting to bin filling phases inclusive, 22% for the storage phase, 27% for the shovelling to truck loading phases inclusive and 35% for the truck unloading to packaging phases inclusive. These contributions varied considerably within phases and within links. The results can be used to develop equipment, upgrade present chains and design new, produce-frendly handling chains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358081
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  • 17
    Electronic Resource
    Electronic Resource
    Testing the resistance to silver scurf in commercial potato cultivars under controlled environmental conditions (2000)
    Springer
    Potato research 43 (2000), S. 263-271 
    Details
    ISSN: 1871-4528
    Keywords: Helminthosporium solani ; storage conditions ; disease resistance ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Optimum storage conditions to identify resistance to silver scurf among commercially grown potato cultivars were determined in a series of experiments. Inoculation of field-grown tubers with a conidial suspension ofH. solani (concentration 104 conidia per ml of water) and incubation at 15°C with 95% RH for 1 month followed by 2 months at 85% RH produced the greatest differences in disease severity between potato cultivars. Results with glasshouse-grown tubers were comparable with those from field-grown tubers, indicating that the test could be used to identify resistance in wild species of potato and to understand the inheritance of this resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358085
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  • 18
    Electronic Resource
    Electronic Resource
    Response of tubers of five potato cultivars to co-inoculation with US-1 and US-8 genotypes ofPhytophthora infestans (2000)
    Springer
    Potato research 43 (2000), S. 153-161 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; sexual reproduction ; oospores
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The severity of late blight tuber rot in five potato cultivars (Green Mountain, Sebago, Dorita, AC Brador and Island Sunshine) resulting from inoculation with US-1/US-8 combinations of Canadian isolates ofPhytophthora infestans was evaluated. In addition, the potential for mixed (A1∶A2) inoculations to result in oospore formation was examined. In studies conducted in 1996 and 1997, cv. Dorita (and Island Sunshine in 1997) developed the least amount of surface or internal necrosis relative to the other cultivars following co-inoculation with US-1 and US-8 isolates ofP. infestans. Differences also were revealed among isolate combinations used for inoculation. The combination of a US-1 isolate from Prince Edward Island with a US-8 isolate from New Brunswick consistently produced the least amount of necrosis in tubers of the various cultivars. There was no evidence of oospore production in any of the tubers examined.
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    URL: http://dx.doi.org/10.1007/BF02357956
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