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Dissertations / Theses on the topic 'Blueberries'

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Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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1

Crowe, Kristi Michele. "Effects of Post-harvest Treatments on the Microbiological Quality and Pesticide Residues of Lowbush Blueberries." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/CroweKM2002.pdf.

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2

Nsonzi, Frances. "Osmo-convective drying behavior of blueberries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0007/MQ44236.pdf.

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3

Nsonzi, Frances. "Osmo-convective drying behavior of blueberries." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20602.

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The kinetics of moisture loss and solids gain during osmotic dehydration of blueberries under different conditions of temperature (37--60°C), concentration of the sucrose solution (47--70°Brix) and contact time between fruit and sucrose solution (0.5--5.5 h) were studied, and modeled based on Fick's law of unsteady state diffusion. The rates of moisture loss and solids gain were also related to temperature and sucrose concentration.
The second stage convective drying behavior of osmo-dehydrated blueberries was evaluated in a forced air cabinet dryer (temperature: 50°C, relative humidity: 14%, air velocity: 0.6 m/s) with a cross-flow tray arrangement. Osmotic dehydration pre-treatments included different combinations of temperature, sucrose concentration and contact time. Fick's second law of unsteady state diffusion was used to model the air drying kinetics.
The quality of two-stage osmo-convective dried blueberries with respect to color, texture and rehydration ratio was evaluated. The parameters analyzed for color were the total color difference (DeltaE) and, the (a/b) ratio as the indicator for the red-blue color. The texture analysis included evaluation of the hardness, chewiness and stickiness of the osmo-convective dried blueberries. (Abstract shortened by UMI.)

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4

Penman, Laura. "Variation in the Severity of Mummy Berry Disease among Lowbush Blueberry Clones." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/PenmanL2003.pdf.

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5

Yu, Liping. "Osmotic-air dehydration of cherries and blueberries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0003/MQ32286.pdf.

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6

Worthey, Susan S. "Propagation of blueberries in compost amended media." Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1587016.

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The objective of this study was to determine the effects of propagation media containing composted material on the rooting of hardwood and softwood blueberry cuttings. The physical properties were measured at the end of the experiment. The media used were pine bark fines, composted pine bark with ammoniated nitrogen added, hardwood bark and composted chicken manure, pine bark and cotton gin waste, and control (peat moss and perlite, 1:1). All treatments resulted in a low number of rooted hardwood cuttings compared to the control. The total number of roots per cutting and alive cuttings hardwood cuttings was increased by pine bark and ammoniated nitrogen compared to the remaining treatments. The control treatment resulted in the highest number of roots per softwood cutting. None of the treatments increased the number of roots of softwood cuttings and the number of alive cuttings was increased by all treatments compared to the control.

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7

Padley, Les. "Firmness and storage characteristics of crisp-textured blueberries." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0012182.

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8

Howatt, Stephen M. (Stephen Michael). "Control of hexazinone tolerant weeds in lowbush blueberries." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61161.

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Field experiments were conducted from 1989 to 1991 to evaluate several sulfonylurea herbicides, glyphosate and clopyralid for the control of bunchberry and other hexazinone tolerant weeds in lowbush blueberry. Broadcast applications of chlorosulfuron, metsulfuron and glyphosate reduced bunchberry densities at all application dates, though crop damage and subsequent yield reductions were unacceptable. Glyphosate was very effective in controlling a large number of plant species when applied as a spot spray treatment. Tribenuron and DPX R9674 were effective in suppressing bunchberry stem densities at all application dates, without major adverse effects on blueberry, and also controlled a large number of hexazinone tolerant weeds when applied as a spot spray treatment. Clopyralid, at rates as low as 100 g a.i. ha$ sp{-1}$, was very effective as a broadcast treatment for the control of tufted vetch, although problems with crop tolerance and yield reductions were evident in some instances. Clopyralid did not control a large number of hexazinone tolerant species when applied as a spot spray treatment.

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9

Poonnachit, Umpika. "Iron and nitrate assimilation in blueberries (Vaccinium spp.)." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000770.

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10

Aldaous, Sara Abdulmajeed. "Development of Extruded Wild Blueberry Confection." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/AldaousSA2005.pdf.

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11

Small, Pamela Beth. "Development of a Soy-blueberry Burger and the Changes in Anthocyanins and Phenolics During Storage and Broiling." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/SmallPB2007.pdf.

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12

Van, Hoorn A. T. (Aaltje Trientje). "Optimisation of blueberry postharvest handling and storage." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/20906.

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Thesis (MScAgric)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: By world standards South Africa’s contribution to fresh blueberry production is very small, a mere 0.25 %. This seemingly insignificant and unimpressive statistic is, however, by no means indicative of the impending impressive potential the South African blueberry industry holds. South Africa is encountering a rapid growth phase off a very small base and the current 100-150 ton export crop is expected to increase to a range of 500 to 600 tons or more in the next five years. Consequently, export by sea must be considered as a logistic alternative. Seafreight success relies on controlled atmosphere storage which in turn relies on berries of exceptional quality. To achieve this, fundamental differences between blueberry cultivars must be examined and blueberry handling and storage regimes must be assessed and optimised. This study investigates the storage potential of certain rabbiteye blueberries relative to controlled atmospheres and short pre-cooling delays. Quality assessments were based on external colour, soluble solids, titratible acidity, firmness and decay development. Furthermore, the respiration and ethylene production rates as well as moisture loss, of various cultivars were determined to characterize fundamental differences amongst cultivars and to gain insight into their postharvest behaviour. Lastly the effect of infection on pigment levels of blueberry flesh and peel was examined for the purpose of laboratory experience. Controlled atmosphere storage had the greatest impact on berry firmness and percentage decay. No off flavours were detected during sensory analysis at the CA levels tested. CAstored berries were firmer and incidence of decay was reduced significantly. Significant decay reduction was challenged by the market tolerance of no more than 2 %. Decay suppression and storage extension was insufficient (for the set period), particularly after the shelf life period. Cultivar and seasonal differences as well as picking maturity and inoculum pressure determine blueberry CA storability. CA may be a valuable technology, however advances must first be made in ensuring optimal blueberry quality to warrant export by sea. Short pre-cooling delays (0, 2, 4, 6 h) at 20 ºC had no effect on colour (L, C, H), total soluble solids, titratable acidity and firmness of blueberry cultivars, ‘Centurion’, ‘Premier’ and ‘Tifblue’. Results for percentage decay indicate that prompt cooling becomes more critical as the duration of storage increases, particularly when market specification of no more than 2 % decay must be met. Berries subjected to longer delays appear to be more susceptible to decay. Differences exist among cultivars and knowledge gained from this research can be used to adapt handling and cooling regimes. Information generated will benefit cultivar selection for marketing (local vs. export), storage (short vs. long term) and logistics (air vs. seafreight). Rabbiteye blueberry cultivars differ considerably in terms of their respiration rate, ethylene production and moisture loss. These quality parameters were evaluated for various cultivars at 15 ºC. ‘Climax’ appears to have the highest respiration rate, ethylene production and moisture loss, whilst ‘Premier’ has the lowest respiration rate and ethylene production was too low to be detected by gas chromatography. The lowest moisture loss proportionality constant was found for ‘Tifblue’ and ‘Centurion’. A change in blueberry flesh colour from white to dark red was noted in infected berries. Artificial inoculation with Botrytis cinerea showed a similar result. The colour change was evaluated by comparing anthocyanin pigment levels (determined by spectrophotometry and HPLC) of the peel and flesh. Anthocyanin content of infected flesh doubled, whilst that of infected peel was less than 50 % of the control. Pigment leakage has been reported in blueberries. It would appear that cell disruption, induced by infection may facilitate migration of anthocyanin from the peel to the flesh. The storage potential of blueberries depends on cultivar, maturity at harvest, climatic conditions as well as the inoculum pressure. Under favourable conditions storage life of blueberries can be manipulated effectively. Further cultivar specific research that targets relevant quality issues should be investigated. Reliable techniques should be developed to quantify blueberry firmness changes. Research on inoculum levels may give insight into the reduction of decay pressure and decay suppressing alternatives such as antibacterial pads can be examined. Peel integrity relative to decay susceptibility can also be researched on a cellular level.
AFRIKAANSE OPSOMMING: Suid-Afrika se bydrae tot wêreld bloubessie produksie is baie klein, ‘n skrale 0.25 %. Hierdie onindrukwekkende statistiek weerspieel egter glad nie die indrukwekkende potensiaal van die Suid-Afrikaanse bloubessie bedryf nie. Die bedryf ondervind tans ‘n dramatiese groei met ‘n klein begin vanaf die huidige 100-150 ton opbrengs tot wat volgens verwagting binne die volgende vyf jaar sal styg tot in die orde van 500-600 ton. Na aanleiding van die verwagte toename in produksie, sal seevrag verskeping oorweeg moet word as alternatief vir uitvoer eerder as lugvrag. Die sukses van seevrag lê in die gebruik van beheerde atmosfeer opberging (BA), waarvan die sukses op sy beurt bepaal word deur bessies van hoogstaande kwaliteit. Om steeds aan die verwagtings van die oorsese mark te voldoen moet grondliggende verskille tussen bloubessie kultivars ondersoek word en daaropvolgend moet hantering en opbergingstelsels aangepas en geoptimeer word. Die navorsing bestudeer die opbergingspotensiaal van verskeie rabbiteye bloubessies relatief tot beheerde atmosfere en kort vertragings in verkoeling. Kwaliteit, gebasseer op eksterne kleur, oplosbare deeltjies, titreerbare sure, fermheid en persentasie bederf, is ondersoek. Die respirasie en etileenproduksie tempos sowel as vogverlies van verskeie kultivars was verder bepaal om die fundamentele verskille tussen kultivars te bepaal, sowel as insig te verwerf in na-oes gedrag. Die effek van infeksie op pigment vlakke van bloubessie vlees en skil was ondersoek vir die doel van laboratorium ondervinding. Beheerde atmosfeer opberging het die grootste effek getoon op bessie fermheid en persentasie bederf. Na aanleiding van sensoriese toetse is daar geen wansmaake aangeteken ten op sigte van die BA vlakke wat getoets is nie. Bessies onderworpe aan beheerde atmosfeeriese toestande was fermer en bederfonderdrukking was beduidend. Die markverdraagsaamheid ten opsigte van bessiebederf, is egter 2 %. Hiervolgens was onderdrukking van verval asook opbergingsvermoë, onvoldoende (spesifiek na die rakleeftyd). Kultivar en seisoenale verskille asook plukrypheid en inokulum druk, bepaal ook die sukses van BA opberging. BA word beskou as ‘n waardevolle tegnologie vir verlenging van opberging. Dit blyk egter dat daar eers ‘n vooruitgang gemaak moet word in die versekering van optimale bessie kwaliteit voordat verskeping oorweeg kan word. Kort vertragings (0, 2, 4, 6 uur by 20 ºC) in verkoeling, het geen invloed gehad op kleur, (L, C, H), totale oplosbare vastestowwe, titreerbare suur en fermheid van bloubessie kultivars ‘Centurion’, ‘Premier’ en ‘Tifblue’ nie. Bederfresultate dui daarop dat onmiddelike verkoeling krities is, veral by verlengde opberging, om aan die 2 % bederf drempelwaarde te voldoen. Bessies onderhewig aan langer vertragings voor verkoeling, blyk meer vatbaar te wees vir bederf. Verskille bestaan tussen kultivars en kennis ingewin tydens hierdie navorsing kan toegepas word om hanteringsprosedures en verkoeling aan te pas. Ingeligte besluitneming kan dus ten opsigte van kultivarspesifieke bemarking (plaaslik en uitvoer), opberging (kort- en langtermyn) en vervoer (lug- en seevrag) gemaak word. Rabbiteye bloubessie kultivars verskil aansienlik ten opsigte van hul respirasietempo, etileenproduksie en vogverlies. Laasgenoemde kwaliteitsbepalers is by verskillende kultivars ondersoek by 15 ºC. ‘Climax’ het die hoogste respirasietempo, etileenproduksie en vogverlies getoon, terwyl ‘Premier’ die laagste respirasietempo gehad het, en die etileenproduksie te laag was om met die gaschromatograaf te bepaal. Die laagste vogverlies proporsionaliteitskonstante is waargeneem tussen ‘Tifblue’ en ‘Centurion’. ‘n Verandering is waargeneem in bloubessie vrugvleeskleur van wit tot donkerrooi by besmette bessies. ‘n Soortgelyke resultaat is verkry met kunsmatige inokulering met Botrytis cinerea. Die kleurverskil is geëvalueer deur vergelyking te tref met die antosianienpigment vlakke tussen die skil en die vlees (bepaal deur spektrofotometrie en HPLC). Antosianieninhoud van besmette vrugvlees het verdubbel, terwyl die van besmette vrugskil minder as 50 % van die kontrole groep was. Pigmentlekkasie is al vermeld by bloubessies. Dit wil voorkom of selskade veroorsaak deur infeksie beweging van antosianien vanaf die skil na die vlees kan aanhelp. Die opbergingspotensiaal van bloubessies hang af van kultivar, rypheid by oes, omgewings toestande sowel as inokulum druk. Onder gunstige toestande kan bloubessies se opbergingsvermoë effektief gemanipuleer word. Verder kultivar-spesifieke navorsing wat relevante kwaliteits kwessies aanspreek, kan gedoen word. Verder kan betroubare tegnieke in die meting van bloubessie fermheid veranderinge ondersoek word. Navorsing ten opsigte van inokulum vlakke mag insig gee in terme van bederf-druk vermindering en die gebruik van bederf-onderdrukking alternatiewe soos anti-bakteriese lappies. Skil integriteit relatief tot bederf-vatbaarheid kan ook op sellulere vlak ondersoek word.

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13

Teh, Yeah Hoong. "Development and Evaluation of New Wild Blueberry and Soy Frozen Dessert." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/TehYH2004.pdf.

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14

Kristo, Aleksandra S. "The Effect of Wild Blueberries on Endothelium-Dependent Vasodilation in Spontaneously Hypertensive Rats." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/KristoAS2008.pdf.

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15

Magrane, Elijah James. "The Effects of Blueberry Consumption on Satiety and Glycemic Control." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/MagraneEJ2009.pdf.

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16

Venkatachalapathy, Kamadenahally. "Combined osmotic and microwave drying of strawberries and blueberries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0019/NQ44619.pdf.

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17

Glass, Vimy M. "Drought stress effects in wild blueberries (Vaccinium angustifolium Ait.)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0017/MQ57237.pdf.

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18

Norton, Cynthia Ann. "The Effect of Whole Wild Blueberries on Endothelial Function of the Sprague-Dawley Rat as Related to Cardiovascular Disease." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/NortonCA2003.pdf.

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19

Clark, Kateryna. "Wild Blueberries Affect Endothelium-dependant Vasodilation in Sprague-Dawley and Spontaneously Hypertensive Rats." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/ClarkK2007.pdf.

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20

Chen, Wei-Chun. "EFFECTIVENESS OF POSTHARVEST SANITATION TREATMENTS ON MICROBIAL LOAD OF BLUEBERRIES." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-10172008-084244/.

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The purpose of this study was to determine the quality and microbial load of blueberries at different maturity stages, to develop the effective microbial recovery method and to compare sanitation postharvest treatments on microbial counts of blueberries. The soluble solids and the sugar to acid ratio increased, while pH and TA decreased with maturity. Ripe berries had lower yeast and mold counts (YMC) at other maturity stages, but there were no differences on aerobic plate counts (APC). The medium pH was lower for stomaching and blending than hand massaged samples. This leads to higher recovery of microorganisms by massaging. Sodium hypochlorite at 400 ppm was effective in reducing APC but not YMC. Acidified sodium chloride was very effective, lowering APC and YMC below detectable level. All sanitation treatment did not influence sensory attributes of blueberries.

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21

Bagnulo, John David. "Antioxidant Assessment in Western Maine Elderly Women Following 30 Days of Wild Blueberry Consumption." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/BagnuloJD2003.pdf.

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22

Saunders, Robert J. "Artificial Recharge of Groundwater as a Water Management Option for Eastern Maine." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/SaundersRJ2001.pdf.

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23

Bell, Daniel J. "Spatial and Genetic Factors Influencing Yield in Lowbush Blueberry (Vaccinium angustifolium Mt.) in Maine." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/BellDJ2009.pdf.

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24

Frost, Kathleen Ewell. "Identification and Pathogenicity of Some Fungi Associated with Lowbush Blueberry." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/FrostKE2008.pdf.

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25

Malay, William J. "Spatial variability and yield monitor evaluation for carrots and wild blueberries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ57191.pdf.

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26

Chen, Guang. "Prototype Micro Sensors for the Detection of Pesticide Residues on Blueberries." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/ChenG2002.pdf.

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27

Roubos, Craig Richard. "Monitoring and managing blueberry gall midge (Diptera: Cecidomyiidae) in rabbiteye blueberries." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024872.

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28

Peshlov, Boyan N. "Infestation Detection in Wild Blueberries Using Near Infrared Spectra and Multivariate Data Analysis." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/PeshlovBN2008.pdf.

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29

Stojanovic, Jelena. "Determination of polyphenol oxidase (PPO) activity, anthocyanin contents and the phytonutrient changes in blueberry juice as influenced by different processing methods." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-05292008-172900.

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30

Barker, Ann Elizabeth. "Wild Blueberry Consumption and Risks for Cardiovascular Disease." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/BarkerAE2006.pdf.

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31

Ingratta, William J. "Effects of preplant herbicides on the establishment of Vaccinium Angustifolium Ait." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65398.

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32

Day, Ngoc Bich. "The inhibition of yeast spoilage of blueberries during modified atmosphere packaging storage." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27868.

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Modified atmosphere packaging storage combines an atmosphere of higher carbon dioxide and lower oxygen levels than air, with chilling temperatures to extend shelf-life of fresh fruits. In three modified atmosphere packaging storage trials, blueberries were packaged in film bags with different gas permeabilities, and stored at about 4°C. Storage of blueberries in packages of a film with intermediate gas permeability produced an aerobic atmosphere and a relatively low carbon dioxide level, resulting in rapid growth of yeast and molds on blueberries. Packaging blueberries in a film with very low gas permeability created a high carbon dioxide almost anaerobic atmosphere, which successfully inhibited yeast and mold growth on blueberries for up to eight weeks. The possibility of yeast inhibition by antifungal compounds accumulated in blueberries stored under modified atmosphere packaging conditions was investigated by using the disk diffusion assay. The results of these assays showed the absence of antifungal activity against two Rhodotorula species, a Zygosaccharomyces species, a Cryptococcus species, a Debaryomyces species, and indicated that the inhibition of yeast growth was due to low temperature, high carbon dioxide level and anaerobic conditions. The effects of temperature and atmosphere composition were investigated by using natural flora of blueberry juice and two yeast isolates grown in sterilized juice. At 21°C, yeast growth was slow in the presence of carbon dioxide and absence of oxygen. At low temperature, yeast growth was slow in the presence of oxygen, but was inhibited in the anaerobic, high carbon dioxide environment. It is proposed that the micro-aerobic environment of modified atmosphere packaging storage might have allowed slow desaturation of yeast membrane fatty acids which enabled yeasts to maintain membrane fluidity and function at low .temperature. Furthermore, yeast growth during storage of modified atmosphere packaged blueberries may be affected by low temperature and high carbon dioxide conditions.
Land and Food Systems, Faculty of
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33

Garrett, June Kazumi. "Inhibition of Helicobacter pylori by Wild Blueberry Phenolics." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/GarrettJK2009.pdf.

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34

Wimby, Schmidt Johanna. "Blueberries of Wrath : An examination of the complexity in the Swedish berry industry." Thesis, Linnéuniversitetet, Institutionen för samhällsstudier (SS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-31376.

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In the early 21st Century Sweden’s daily press was full of articles of Asian migrant workers that was picking berries in the north of the country. It was reported that the pickers was exploited by the industry and that it was complete chaos in the berry forests and that no one wanted to take responsible for the situation. As one measurement the Swedish Board of Migration adopted guidelines of how to import work force. The guidelines had a positive effect. The guidelines, however, also created a new problem a now shifted focus to another group of pickers: migrant workers from poor member-states of the European Union. This research partly aims to find out who is the responsible for the situation and who can do something that can improve the situation. Further, the research aim to find out why so many Easter European chose Sweden as country to work in, and then if the Swedish Board of Migrations guidelines actual effect of the migration flow. As a part of a solution for the berry pickers a few organization stands out, namely the ones that a company can use to clean their name with if they connect themselves to. This research then also aim to understand to find out if those organizations can make a positive impact of the situation. Mainly daily press has been used as the main source to create a framework over the situation. The analysis is made from the statements found in the large share of different sources available, but also through Swedish rules, politicians and the workers and theories of migration. In order to put the situation in Sweden in a larger context, a comparison with Austria is made. The final conclusion of the research is somehow devastating. There is still a hassle to understand who can be put in charge of the wheel, but the aftermath is that in the end the actor with most power in the industry might be the consumer of the berries.

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35

Muller, Jasper Lodewyk. "Pruning and pollination studies on southern highbush blueberries (V. corymbosum L. interspecific hybrids)." Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17837.

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Thesis (MScAgric)--Stellenbosch University, 2011.
ENGLISH ABSTRACT: Commercial production of the southern highbush blueberries (SHB) ‘Jewel’, ‘Emerald’, ‘Star’, ‘Snowchaser’ and ‘Bluecrisp’ started recently in the Western Cape. In South Africa, no research has been conducted on pruning and pollination of SHB, and various questions regarding these practices have arisen. Six experiments were conducted to evaluate the self-compatibility and the effect of cross-pollination on berry characteristics of ‘Star’, ‘Emerald’, ‘Jewel’, ‘Bluecrisp’ and ‘Snowchaser’. The effect of cross-pollination on fruit set, berry weight, berry diameter and fruit development period is cultivar dependant. ‘Bluecrisp’ appears self-incompatible and ‘Misty’ or ‘Emerald’ can be recommended as cross-pollinators. ‘Snowchaser’ seems self-compatible and solid block plantings can be recommended. ‘Misty’ and ‘Emerald’ would be recommended as cross-pollinators for ‘Star’ and ‘Jewel’ respectively, even though these cultivars will set an adequate crop when self-pollinated. Although ‘Emerald’ seem self-compatible, the fruit set tends to vary greatly and cross-pollination with ‘Jewel’, ‘Misty’ and ‘Bluecrisp’ is recommended to obtain early maturing berries of the required size. Another season’s data is required before final conclusions can be drawn. In order to establish sustainable summer pruning strategies for South African growing conditions that will maximise yield and berry quality for SHB, two pruning trials were conducted. In the first trial, the severity of pruning of ‘Star’, ‘Emerald’ and ‘Jewel’ was evaluated. We established that summer pruning is a compromise between total yield and desired berry size. All the pruning treatments reduced total vegetative growth and shoot number, but increased individual shoot length. Summer pruning increased berry weight and diameter by reducing total yield, but also by developing better quality bearing wood. Vigorous laterals stimulated by pruning seize growth later thereby delaying reproductive bud initiation and harvest. An increase in the severity of pruning increased the level to which the plants responded. No pruning and ‘light pruning’ gave the highest yields, but one more season’s data will clarify whether successive light pruning is sustainable. “Standard pruning” resulted in a well-balanced plant with an intermediate yield and berry size. Heading of one-year-shoots as part of the pruning strategy is not recommended for any of the cultivars. “Severe pruning” will only be recommended for young, newly established plantings where vegetative growth is the main objective. A second trial was conducted to study the effect of time of summer pruning. At Teeland, delaying pruning resulted in a decrease in total new growth and shoot number thereby reducing yield. This was probably due to progressively more buds that became endodormant. For all three cultivars, pruning as soon as possible after harvest would therefore be recommended. At Lushof, the effect of time of summer pruning was not significant. This could be due to the fact that plants were younger and more vigorous or because the area is warmer and growth continued for longer. One more season’s data is needed before any final conclusions are drawn.
AFRIKAANSE OPSOMMING: Kommersiële verbouing van die “southern highbush” bloubessies (SHB) ‘Jewel’, ‘Emerald’, ‘Star’, ‘Snowchaser’ en ‘Bluecrisp’ is ’n nuwe ontwikkeling in die Wes-Kaap. In Suid-Afrika is nog geen navorsing oor die snoei en bestuiwing van SHB onderneem nie, en verskeie vrae het oor hierdie praktyke ontstaan. Ses eksperimente is gedoen om die self-verenigbaarheid, sowel as die effek van kruisbestuiwing op bessie-eienskappe van ‘Star’, ‘Emerald’, ‘Jewel’, ‘Bluecrisp’ en ‘Snowchaser’ te evalueer. Die effek van kruisbestuiwing op vrugset, bessiegewig, bessiedeursnee en vrugontwikkelingsperiode is kultivar spesifiek. ‘Bluecrisp’ blyk self-onverenigbaar te wees en kruisbestuiwing met ‘Misty’ of ‘Emerald’ word aanbeveel. ‘Snowchaser’ blyk self-verenigbaar te wees en suiwer blok aanplantings kan dus aanbeveel word. ‘Misty’ en ‘Emerald’ word onderskeidelik as kruisbestuiwers vir ‘Star’ en ‘Jewel’ aanbeveel, alhoewel beide kultivars ‘n goeie oes sonder kruisbestuiwing kan lewer. Vir ‘Emerald sal kruisbestuiwing met ‘Jewel’, ‘Misty’ of ‘Bluecrisp’ aanbeveel word, indien vroeë, groot bessies belangrik is. ’n Tweede seisoen se data word benodig om bogenoemde te bevestig voor finale aanbevelings gemaak kan word. Twee snoeiproewe is uitgevoer om volhoubare somersnoei-strategieë te ontwikkel wat die opbrengs en kwaliteit van bessies onder Suid-Afrikaanse groeitoestande sal maksimeer. In die eerste snoeiproef is die intensiteit van snoeisnitte vir ‘Star’, ‘Emerald’ en ‘Jewel’ ondersoek. Daar is vasgestel dat totale opbrengs en bessiegrootte teen mekaar opgeweeg moet word wanneer strafheid van snoei ge-evalueer word. Somersnoei verminder totale vegetatiewe groei en aantal nuwe lote, maar vermeerder lootlengte en bessiegrootte. Somersnoei het ‘n toename in bessiegrootte tot gevolg deur dat die totale opbrengs verminder, maar ook deur die kwaliteit van draende lote te verbeter. Meer groeikragtige lote gestimuleer deur somersnoei, staak verlengingsgroei later in die seisoen wat dan lei tot later bloknopinisiasie en oes. Geen snoei, sowel as “ligte snoei” het gelei tot die grootste opbrengs na die afloop van een seisoen, maar nog ‘n seisoen se data word benodig om vas te stel of dit volhoubaar is. “Standaard snoei’” lei tot ‘n goed gebalanseerde plant met ‘n gemiddelde opbrengs en bessiegrootte. “Harde snoei” sal slegs aanbeveel word vir nuwe aanplantings waar vegetatiewe groei die hoof prioriteit is. Om die tydsbereking van somersnoei aan te spreek, is ‘n tweede snoeiproef uitgevoer. Op Teeland, het ‘n uitstel van somersnoei gelei tot ‘n afname in vegetatiewe groei en aantal lote en dit het dan gelei tot ‘n afname in opbrengs. Hierdie was moontlik die gevolg van meer knoppe wat mettertyd in endodormansie ingegaan het. Op Lushof het die tydsberekening van somersnoei geen betekenisvolle effek gehad nie. Dit kan moontlik toegeskryf word aan die jonger, groeikragtige plante, of aan die langer groeiseisoen weens die warmer klimaat in die area. Nog ‘n seisoen se data word egter benodig voor enige finale gevolgtrekkings gemaak kan word.

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Ordway, Gregory A. "Blueberries and Antidepressants: Insights From Studies of Brain Oligodendrocytes in Depression and Suicide." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etsu-works/8652.

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McGovern, Kristen B. "Evaluation of Potential Organic Controls of Mummy Berry Disease Affecting Lowbush Blueberry in Maine." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/McGovernKB2007.pdf.

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38

Casadesus, Gemma. "Modulation of cognition by dietary blueberry supplementation : role of hippocampal neurogenesis and associated molecular mechanisms /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2003.

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Thesis (Ph.D.)--Tufts University, 2003.
Adviser: Robin B. Kanarek. Submitted to the Dept. of Psychology. Includes bibliographical references (leaves 89-106). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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39

Massarotto, Giovana. "Mirtilo, gênero Vaccinium, cv. Misty cultivado no Brasil : caracterização química e atividade citotóxica em células de mamíferos." reponame:Repositório Institucional da UCS, 2014. https://repositorio.ucs.br/handle/11338/945.

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O mirtilo é um fruto originário da região sul dos Estados Unidos, caracterizada pela presença de clima temperado e foi introduzido no Brasil a partir dos anos 1980. Atualmente, Vacaria (RS) é a cidade com maior produção do fruto no Brasil, isso se dá principalmente pela localização geográfica montanhosa numa região de clima bastante frio, nos Campos de Cima da Serra. Os mirtilos são conhecidos por serem ricos em antocianinas, substância localizada na casca do fruto e que está associada à importante atividade antioxidante, com redução do risco cardiovascular, atividade anti-inflamatória e antitumoral. Neste estudo, buscou-se caracterizar quimicamente os extratos hidroalcóolicos obtidos do fruto inteiro e das frações da casca e polpa do fruto e do extrato metanólico do fruto inteiro de mirtilo da cultivar Misty, do grupo Southern Highbush por cromatografia líquida acoplada a espectrômetria de massas (GC-MS) com fonte de electrospray de alta resolução, acoplada a espectrômetro de massas (ESI-QTOF MS/MS) em modo negativo e positivo. A identificação química confirmou a presença de antocianinas nas amostras de casca e fruto inteiro dos extratos hidroalcóolico e metanólico, sendo encontrados derivados da delfinidina, cianidina, peonidina, petunidina e malvidina, além de compostos polifenólicos como ácido clorogênico, quercetinas, proantocianidinas na polpa do extrato hidroalcóolico e no fruto inteiro dos extratos hidroalcóolico e metanólico. Todos os extratos analisados apresentaram menor citotoxicidade na linhagem não tumoral (MRC-5) e seletividade para linhagens tumorais (Hep-2, HeLa, HT-29), sendo que verificou-se menor atividade no extrato obtido da polpa em relação as demais amostras. Observou-se uma redução importante na viabilidade celular em linhagens tumorais com aumento do tempo de exposição (de 24h para 72h) ao extrato metanólico do fruto inteiro. Indução de apoptose foi observada após 24h e 72h de exposição aos extratos hidrolcóolico e metanólico por coloração de laranja de acridina e brometo de etídio, em que a maioria das linhagens tumorais apresentaram-se em estágios finais do processo de apoptose e necrose. A partir desses resultados, sugere-se que o extrato de mirtilo da cultivar Misty possui atividade biológica em células tumorais, porém mais estudos são necessários com a finalidade de entender os mecanismos envolvidos na citotoxidade e comprovar a eficácia dessa espécie como possível agente antitumoral.
Submitted by Ana Guimarães Pereira (agpereir@ucs.br) on 2015-06-02T18:33:20Z No. of bitstreams: 1 Dissertacao Giovana Massarotto.pdf: 2085253 bytes, checksum: ab3bd150442a36d5f9392b14cc37b9e7 (MD5)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES.
The blueberry is originally from southern United States which is, characterized by a temperate climate. It was subsequently introduced in Brazil in, 1980. Currently, Vacaria (RS) is the city with the largest fruit production in Brazil, this is mainly because of its geographic region of very cold weather in the mountains, in Campos de Cima da Serra. Blueberries are known to be rich in anthocyanins, a substance found in the skin of the fruit and is associated with significant antioxidant activity with cardiovascular risk reduction, anti-inflammatory activity and antitumor. Hydroalcoholic extracts of whole fruit and skin and pulp fractions of the fruit and the methanol extract of the whole fruit of fruits blueberry of the cultivar Misty were chemically characterized by gas chromatography-mass spectrometry (GC-MS) and high-resolution electrospray ionization mass spectrometry (ESI-HRMS) in negative mode. The chemical identification confirmed the presence of anthocyanins in samples of whole fruit and skin of methanolic and hydroalcoholic extracts, delphinidin, cyanidin, petunidin, malvidin being found, and polyphenolic compounds such as chlorogenic acid, quercetins, proanthocyanidins in the pulp of the hydroalcoholic extract and the whole fruit of the hydroalcoholic and the methanol extract. All the extracts analyzed showed lower cytotoxicity in non-tumor cell line (MRC-5) and selectivity to tumor cell lines (Hep-2, HeLa, HT-29), with less activity in the extract from the pulp in relation to the other samples analyzed. An important decrease in cell viability in tumor cell lines was observed when increasing time of exposure (from 24h to 72h) using methanol extract of the whole fruit. Induction of apoptosis was observed after 24h and 72h exposure to ethanol and methanol extract by ethidium bromide and acridine orange staining, where the majority of tumor lines showed increase in percentage at late apoptosis stages and necrosis. The results here observed suggests that the extract of blueberry, Misty cultivar, presents biological activity in tumor cell lines, but further studies are needed to understand the mechanisms involved in cytotoxicity and evaluate the effectiveness of these species as possible antitumor agent are necessary.

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Crowe, Kristi Michele. "Evaluation of Chemical and Photochemical Oxidation Processes for Postharvest Processing of Lowbush Blueberries (Vaccinium angustifolium)." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/CroweKM2006.pdf.

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Романенко, А. С. "Розмноження та вирощування лохини садової за використанням біотехнологічних методів." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25090.

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Романенко, А. С. Розмноження та вирощування лохини садової за використанням біотехнологічних методів : випускна кваліфікаційна робота : 201 "Агрономія" / А. С. Романенко ; керівник роботи О. П. Тимошенко ; НУ "Чернігівська політехніка", кафедра аграрних технологій та лісового господарства. – Чернігів, 2021. – 56 с.
Об’єктом досліджень є процеси вирощування лохини та розмноження безвірусного матеріалу в умовах in vitro. Предметом дослідження є використання біотехнологічних методів в технології розмноження та вирощування лохини. Показано, що розмноження лохини (Vaccinium corymbosum L.) для масового отримання посадкового матеріалу цього цінного інтродуцента досягається при введенні лохини вузьколистої в культуру in vitro і багаторазовому мікроклональному розмноженні стерильної культури.
The object of research is processes of growing blueberries and propagation of virus-free material in vitro. The subject of research is the use of biotechnological methods in the technology of reproduction and cultivation of blueberries It is shown that the reproduction of blueberry (Vaccinium angustifolium Aiton) for mass production of planting material of this valuable introducent achieved with the introduction of blueberry angustifolia in vitro and multiple micropropagation sterile culture.

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Saad, Mohd Ridzuan Mohd. "Effect of chilling, hydrogen cyanamide, hot water and bud scale removal on bud break of 'Tifblue' rabbiteye blueberry." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040256/.

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Swart, Philippus. "Harvest scheduling of southern highbush blueberries (Vaccinium corymbosum L. interspecific hybrids) in a climate with moderate winter chilling." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96962.

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Thesis (MSc)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Profitability in the export driven South African blueberry industry is dependent on early spring harvests. The George region in the Western Cape accumulates too few chill-units to release buds of some southern highbush (SHB) blueberry cultivars from endodormancy. This causes problems like delayed budbreak and extended harvests. Growers of other temperate fruit crops are also affected by these problems and chemical rest breaking agents (RBAs) are applied in orchards in an attempt to overcome these. Application of the RBA hydrogen cyanamide (HC) occurs commonly in commercial pome and stone fruit orchards while thidiazuron (TDZ), another RBA is applied on a limited scale in apple orchards. The effect of RBA application on berry ripening, berry size and yield in SHB cultivars Bluecrisp, Emerald and Star was investigated for two seasons in an orchard near George, in order to determine to what extent harvest scheduling with RBAs is possible. Following Dormex® (HC, 520 g L-1) application during 2010, when a warm winter was experienced, the berry ripening of ‘Bluecrisp’ was accelerated. Dormex® application before reproductive bud scales opened, but after some chilling, resulted in acceptable yield and berry size without damage to reproductive buds. A 1% rate gave similar results as a 2% rate, but at a lower risk of reproductive bud damage. Lift® (TDZ, 3 g L-1) application reduced the number of days to 75% harvest in ‘Star’ during 2010. Lower yielding plants produced larger berries than those from higher yielding plants. Lift® application after reproductive buds scales have opened caused malformed and damaged flowers. Delaying the initiation of reproductive buds could delay spring reproductive budbreak until after new leaves had formed. In turn, this should induce a faster berry ripening rate in some SHB cultivars than would otherwise be the case following unseasonably warm winters. Reproductive bud initiation in SHB blueberries occurs under long (16 hours) nights with the mediation of phytochrome. It is possible in a controlled environment to suppress SHB blueberry reproductive bud initiation by night interruption (NI). The effect of NI on berry ripening, berry size and yield in ‘Emerald’ and ‘Snowchaser’ was investigated for two seasons, to determine what degree of harvest scheduling is possible with this technique. NI did not suppress reproductive bud development under these trial conditions, since both cultivars flowered and produced fruit. The effect on berry size and yield was cultivar specific. During 2011 NI decreased the number of berries harvested and total yield per plant in ‘Emerald’, and this decrease was linear the longer the NI lasted.
AFRIKAANSE OPSOMMING: Winsgewendheid in die uitvoer-gedrewe Suid-Afrikaanse bloubessie-bedryf is van vroeë lente oeste afhanklik. In die George-omgewing in die Wes-Kaap bou te min winterkoue op om die endodormansie van sommige ‘southern highbush’ (SHB) bloubessie kultivars natuurlik op te hef, wat probleme soos vertraagde bot en uitgerekte oestye veroorsaak. Produsente van ander gematigde vrugtesoorte, word ook deur hierdie probleme geraak en chemiese rusbreekmiddels (RBs) word in boorde aangewend in ’n poging om dit te oorkom. In kern- en steenvrugboorde vind aanwending van die RB waterstofsianamied (WS) algemeen plaas. Thidiazuron (TDZ), ’n ander RB word op beperkte skaal in appelboorde aangewend. Die uitwerking van RBs op bessierypwording, -grootte en opbrengs van SHB kultivars Bluecrisp, Emerald en Star is oor twee seisoene in ’n boord naby George ondersoek, om vas te stel tot watter mate bloubessie-oesskedulering met behulp van RB aanwending moontlik is. Na Dormex® (WS, 520 g L-1) aanwending in 2010, waarin ’n warm winter ondervind is, is die bessierypwording van ‘Bluecrisp’ versnel. Dormex® aanwendingstye voordat blomknopskubblare oopmaak, maar nadat winterkoue opgebou het, het ’n aanvaarbare opbrengs en bessiegrootte met geen blomknopskade tot gevolg gehad nie. ’n 1% Konsentrasie gee soortgelyke reaksies as ’n 2% aanwending maar teen ’n laer risiko vir blomknopskade. Lift® (TDZ, 3 g L-1) aanwending het die aantal dae tot 75% oesinsameling van ‘Star’ in 2010 verminder. Plante wat ’n laer opbrengs lewer produseer groter bessies as die wat ’n hoër opbrengs lewer. Lift® aanwending nadat blomknopskubblare oopgemaak het, het misvormde en beskadigde blomme tot gevolg gehad. Vertraging van blomknopinisiasie kan die oopmaak van blomknoppe uitstel tot na nuwe blare in die lente gevorm het. Dit kan vinniger bessie rypwording meebring as wat die geval vir sommige SHB kultivars na warm winters is. Die aanvang van blomknopontwikkeling in SHB bloubessies vind tydens lang nagte (16 ure) plaas en staan onder beheer van fitochroom. Onder beheerde toestande kan bloubessie blomknopinisiasie deur onderbreking van die lang donker (nag) tydperk (ON) in ’n lig-donker siklus onderdruk word. Die uitwerking van ON op bessierypwording, -grootte en opbrengs van ‘Emerald’ en ‘Snowchaser’ is oor twee seisoene ondersoek, om die mate waartoe oesskedulering met hierdie tegniek in ’n boord moontlik is aan te spreek. ON het nie die blomknopinisiasie onder hierdie eksperimentele toestande onderdruk nie, aangesien beide kultivars in albei seisoene kon blom en opbrengste lewer. Die effek op bessiegrootte en opbrengs was kultivar spesifiek. In 2011 is die totale opbrengs en hoeveelheid bessies per plant geoes van ‘Emerald’, deur ON verminder en dié vermindering was liniêr met toename in aantal ON siklusse.

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Bergeron, Lyne. "Effet de la teneur en eau du sol sur le rendement et la qualité des fruits du bleuet nain /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1995. http://theses.uqac.ca.

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Dodd, Georgina Frances. "The acute effects of flavonoid-rich blueberries on cognitive function in healthy younger and older adults." Thesis, University of Reading, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607157.

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Despite evidence from the animal literature on the benefits of flavonoids on cognition, research with human subjects is limited, particularly with regard to flavonoid-rich blueberries. This research investigated the acute effects of a blueberry beverage (containing - 579mg of flavonoids) on cognition, by conducting randomised controlled cross-over intervention studies with healthy younger (N=19) and older (N=IS) adults. Cognition was measured at baseline, two and five hours post drink. Vascular reactivity and brain-derived neurotrophic factor (BDNF) were also measured, one hour post drink. A magnetic resonance imaging (MRI) study was conducted to determine whether the blueberry drink would lead to increased cerebral blood flow (CBF). Univariate statistical analysis revealed improvement in updating ability in the younger adults and immediate word recognition in the older group, following the blueberry compared to control drink, whereas susceptibility to priming in the older adults was reduced. However, for the majority of the univariate analyses, there was no significant effect of the intervention, which was also true following multivariate analysis of the cognitive measures. In both groups, whilst there was no effect of the intervention on vascular reactivity, BDNF levels were higher following the blueberry compared to control drink. Whilst results of the MRI study revealed no effect of the intervention on whole brain or gray matter CBF, there was increased CBF in different regions of the occipital cortex post consumption of the drinks, however more interestingly, there was a greater increase in CBF in areas of the precentral and middle frontal gyrus (frontal lobe) as well as the angular gyrus (parietal lobe) following the blueberry compared to control drink. In conclusion, acute blueberry supplementation led to improvement in some cognitive abilities, possibly due to the impact of flavonoids on cell signalling pathways (e.g. those involving BDNF), in addition to vasodilatory properties and subsequent CBF increases.

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Concha-Meyer, Anibal Andres. "Survival of Listeria monocytogenes on Blueberries (Vaccinium corymbosum) and Shelf Life Determination under Controlled Atmosphere Storage." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51815.

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Listeria monocytogenes represents a high risk for consumers, because it causes severe illness. This work studied in-vitro growth and survival of L. monocytogenes in media acidified with malic acid, lactic acid or blueberry extract. The growth of L. monocytogenes and shelf life extension of fresh blueberries were evaluated after storage at 4 deg C or 12 deg C under different controlled atmosphere conditions, including air (control); 5% O2 and 15% CO2, 80% N2 (CAS); or ozone gas (O3) 4ppm at 4 deg C or 2.5ppm at 12 deg C, at high relative humidity (90-95%) for a total of 10 days. L. monocytogenes growth in tryptic soy broth with yeast extract (TSB+YE) mixed with different acid solutions (malic acid, lactic acid and blueberry extract) and incubated at 25 deg C for 24h, was calculated measuring optical density. Complete inhibition occurred in the presence of treatments including malic acid pH 2.0 and pH 3.0; lactic acid pH 2.0, pH 3.0 and pH 4.0; and with blueberry extract pH 2.0 in the mixture. After 6h, there were significant differences among growing treatments. At 18h, there were no significant differences in turbidity among media mixed with blueberry extract at pH 3.0, 4.0 and 5.0, and their optical density values were higher than treatments including media mixed with malic acid 5.0 or lactic acid 5.0. Blueberry extract was not an effective acidifying media and acid adapted L. monocytogenes grew in acidified media. Fresh blueberries inoculated with L. monocytogenes were stored at 4 deg C or 12 deg C under different controlled atmosphere conditions (Air, CAS or O3 4ppm at 4 deg C or 2.5ppm at 12 deg C) and sampled on day 0, 1, 4, 7 and 10 for bacterial growth, weight loss, firmness and yeast and molds counts. CAS did not delay or inhibit Listeria monocytogenes, yeast, or molds by day 10. Storage at 4 deg C showed lower weight loss values compared to 12 deg C. Ozone controlled weight loss and firmness loss. Moreover, gaseous ozone achieved 3 and 2 log reductions when compared with air at 4 deg C and 12 deg C, respectively.
Ph. D.

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Muller, Katherine Charlotte. "Formation of iron-rimmed sandstone nodules on earth; terrestrial analogue for the formation of Martian blueberries?" Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Muller_2009_09007dcc8071b44c.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2009.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 11, 2009) Includes bibliographical references (p. 85-87).

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MacDonald, Stuart Gerald. "Two viruses associated with blueberry scorch disease." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29421.

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Blueberry bushes with scorch symptoms were found during a survey of blueberry fields in British Columbia, Washington, and Oregon. Some of these bushes were infected with blueberry scorch virus (BBScV) while others contained a second virus which was sap transmissible to Nicotiana clevelandii, N. benthamiana, and N. tabacum cv. 'Havana 425' . This virus was purified from N. clevelandii and had isometric particles of approximately 30 nm in diameter, a coat protein subunit of 27,500 daltons and a tripartite genome. I was unable to transfer the virus from either infected N. clevelandii or infected blueberry to healthy N. clevelandii with Myzus persicae or Fimbriaphis fimbriata. Serological tests of this blueberry virus with antisera against members of the ilar-, cucumo-, bromo-, or nepovirus groups failed to indicate any relationship. In a subsequent survey using enzyme-linked immunosorbent assay, this isometric virus was found in blueberry plants from northern Washington state to central Oregon but has not yet been found in B.C. Of the established members of the carlavirus group examined, BBScV is most closely related to potato virus S (PVS) and less closely related to carnation latent virus (CLV) and potato virus M (PVM). The difference in host range between BBScV and PVS would indicate that the BBScV is not a strain of PVS but is a separate virus that is related to PVS. Therefore, BBScV should be renamed blueberry scorch carlavirus (BBSCV). BBSCV was also compared to a carlavirus isolated from blueberry in the Sheep Pen Hill blueberry growing area of New Jersey (referred to as SPHV). These viruses were compared serologically and by use of nucleic acid hybridizations. BBSCV and SPHV were found to be closely related and were concluded to be strains of the same virus. SPHV should be named the New Jersey strain of BBSCV.
Land and Food Systems, Faculty of
Graduate

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49

Potter, Rebecca Margaret. "Development and Evaluation of Wild Blueberry Soy Beverages." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/PotterRM2004.pdf.

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50

Bernier, Bethany A. "Antimicrobial Effects of Blueberry Products Against Escherichia Coli O157:H7 in Liquid Medium and in Ground Beef." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/BernierBA2005.pdf.

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