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Filtering by: Creator Gartner, Barbara L. Remove constraint Creator: Gartner, Barbara L. Academic Affiliation Horticulture Remove constraint Academic Affiliation: Horticulture

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  • Evaluation of Rubus seed characteristics: seed coat morphology, anatomy, germination requirements and dormancy breaking

    Creator:
    Wada, Sugae
    Abstract:
    Rubus seed characteristics; seed coat morphology, anatomy, germination requirements and dormancy were studied in order to define protocols for breaking seed dormancy. Morphological analysis of the seed coat (testa) using scanning electron microscopy (SEM) included 56 seed accessions of 10 subgenera preserved in the collections of the US Department of...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________________________ Barbara M. Reed Rubus seed characteristics; seed coat morphology, anatomy

  • Cryopreservation of in vitro-grown apical meristems

    Creator:
    Chang, Yongjian
    Abstract:
    Alternating temperature (22°C / -1°C) pretreatments were effective for increasing cold hardiness and recovery of cryopreserved meristems. Combining low temperature pretreatment with abscisic acid (ABA) or sucrose treatments reduced the time required for optimal cold hardiness of meristems. Desiccation tolerance was directly correlated with increased cold hardiness and recovery of...
    Resource Type:
    Dissertation
    Full Text:
    Vitro-Grown Apical Meristems. Abstract approved^ . . Barbara M. Reed Alternating temperature (220C

  • Development, detection and elimination of Verticillium dahliae in mint shoot cultures and effects of bacterial cultures and bacterization on the growth and disease development

    Creator:
    Wang, Nan
    Abstract:
    Roots of greenhouse-grown peppermint (Mentha piperita L.) and spearmint (Mentha spicata L.) plants and in vitro-grown shoot cultures were inoculated with Verticillium dahliae conidial suspensions to study symptom development, detection, and elimination of the V. dahliae. There were significant differences in the symptom expression of control and infected shoot cultures...
    Resource Type:
    Masters Thesis
    Full Text:
    Bacterization on the Growth and Disease Development Abstract approved:' Barbara M. Reed Roots of greenhouse

  • Cryopreservation of Shoot Tips: Antioxidant Investigations with Rubus and Protocols for Mentha and Vaccinium

    Creator:
    Uchendu, Esther Eyiuche
    Abstract:
    Oxidative stress that occurs during cryopreservation may be reduced by the addition of antioxidants. Vitamin E (Vit E), Vitamin C (Vit C), glutathione (GSH), lipoic acid (LA), glycine betaine (GB) and polyvinylpyrrolidone (PVP) were applied at four steps of the PVS2 vitrification protocol (pretreatment, loading, rinsing, and regrowth). Shoot tips...
    Resource Type:
    Dissertation
    Full Text:
    : ____________________________________ Barbara M. Reed Oxidative stress that occurs during cryopreservation may be reduced

  • Nondestructive evaluation of in vitro-stored plants : a comparison of visual and image analysis systems

    Creator:
    Aynalem, Hailu M.
    Abstract:
    In-vitro plants in slow-growth storage must be routinely evaluated for repropagation and assessment of viability. It is often difficult to determine plant health by visual assessment due to variation in growth patterns and plant structure among genera. In order to evaluate cold-stored germplasm, laboratories need more effective approaches for viability...
    Resource Type:
    Masters Thesis
    Full Text:
    : Barbara M. Reed In-vitro plants in slow-growth storage must be routinely evaluated for repropagation

  • Improving in vitro mineral nutrition for diverse red raspberry and Rubus germplasm

    Creator:
    Poothong, Sukalya
    Abstract:
    Red raspberry, Rubus idaeus L., is a valuable crop for the U.S. Pacific Northwest and clonal propagation is required to produce disease-free plants and for germplasm preservation. One challenge of red raspberry micropropagation is the wide variation in growth response among the cultivars. The studies described in this dissertation were...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: _____________________________________________________ Barbara M. Reed

  • Micropropagation of Pyrus rootstocks

    Creator:
    Yeo, Dennis
    Abstract:
    The availability of new pear rootstocks could be increased by development of an efficient micropropagation system. Many P. calleryana, P. betulifolia and P. communis rootstocks are resistant to many pear diseases and are graft compatible with leading cultivars. Explains of three potentially useful rootstock selections P. calleryana Decne 'OPR 157',...
    Resource Type:
    Masters Thesis
    Full Text:
    Rootstocks Abstract approved: ~4K, Barbara M. Reed The availability of new pear rootstocks could be

  • Improving initiation and mineral nutrition for hazelnut (Corylus avellana) micropropagation

    Creator:
    Hand, Charles R.
    Abstract:
    Corylus avellana L. is a global commodity and a valuable crop for the U.S. Pacific Northwest. A tremendous amount of work has been put into the development of healthy disease free, high yielding and tasty hazelnuts for the in-shell and confectionary markets. Clonal propagation is required to provide nursery trees...
    Resource Type:
    Masters Thesis
    Full Text:
    :_____________________________________________________________________ Barbara M. Reed Corylus avellana L. is a global commodity and a valuable crop for the U.S

  • Statistical Methods for Tissue Culture Medium Optimization and A Multiplexed Fingerprinting Set for Hazelnuts

    Creator:
    Akin, Melekşen
    Abstract:
    Hazelnut is one of the most important nuts in worldwide production and the European hazelnut (Corylus avellana L.) is the most economically important of the 11 recognized hazelnut species. Development of new cultivars is continuous, with emphasis on better nut quality, high yield and disease resistance. Hazelnuts are highly heterozygous,...
    Resource Type:
    Dissertation
    Full Text:
    Hazelnuts Abstract approved: ______________________________________________________ Barbara M

  • Detection, identification, and antibiotic treatments of bacterial contaminants from micropropagated strawberries

    Creator:
    Tanprasert, Piyarak
    Abstract:
    Bacterial contamination is one of the most important problems both in plant tissue culture research and commercial laboratories. Early detection of contaminants saves time, effort, and money. Strawberry runner explants were screened for contaminants during June to August, 1994 and 1995. Most contaminants found were bacterial rather than fungal. Bacterial...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: - - ,- -. Barbara M. Reed Bacterial contamination is one of the most important problems