Characterization of water stress during cold storage and establishment for Acer platanoides and Crataegus phaenopyrum

Simple item page
dc.contributor.authorBates, Ricky Martinen
dc.contributor.committeechairNiemiera, Alexander X.en
dc.contributor.committeememberWelbaum, Gregory E.en
dc.contributor.committeememberSeiler, John R.en
dc.contributor.committeememberHarris, Rogeren
dc.contributor.committeememberWright, Robert D.en
dc.contributor.departmentHorticultureen
dc.date.accessioned2014-03-14T21:14:52Zen
dc.date.adate2006-06-07en
dc.date.available2014-03-14T21:14:52Zen
dc.date.issued1994-08-01en
dc.date.rdate2006-06-07en
dc.date.sdate2006-06-07en
dc.description.abstractThis study examined the affects of desiccation during and after cold storage on the physiology, growth, and marketability of bare-root Acer platanoides (Norway maple), Crataegus phaenopyrum (Washington hawthorn) and Prunus x yedoensis (Yoshino cherry). Histological examination of Acer and Crataegus stems was also conducted. Maple and cherry trees were transplanted into pine bark-filled containers and subjected to mist or non-mist treatments. Xylem water potential increased (became less negative) for misted maple and cherry trees. Water potential increased for non-misted maple and decreased for non-misted cherry trees. Maple and hawthorn seedlings were subjected to cold storage durations of 2, 4, 6, 8, 10, and 12 weeks and storage treatments: whole plant covered, shoots exposed, roots exposed and whole plant exposed. Shoot (Ψ<sub>s</sub>) and root (Ψ<sub>r</sub>) water potentials for all treatments and both species decreased during storage. For maple, (Ψ<sub>s</sub>) and (Ψ<sub>r</sub>) of the exposed shoot treatment were the same as the whole plant covered treatment. In contrast, hawthorn (Ψ<sub>s</sub>) and (Ψ<sub>r</sub>) of the exposed shoot treatment were lower (more negative) than for the whole plant covered treatment. Root hydraulic conductivity was the same for both species and decreased with increased storage duration and for treatments with exposed roots. For the root covered treatments, maple root growth potential (RGP) increased while hawthorn RGP decreased with increased cold storage duration. RGP for both species remained low throughout storage for treatments exposing roots. Days to bud break for Acer and Crataegus seedlings decreased with increased storage time for the whole plant covered treatments but increased for both species when stored with exposed roots. Maple marketability, percent of trees with ≤ 10% shoot dieback, for root covered treatments was high for most storage durations. Hawthorn marketability was generally low except for the whole plant covered treatment during the first six weeks of storage. There was a high positive correlation between RGP and marketability for both maple and hawthorn. Histological examination revealed that Acer stems had a highly suberized periderm, and a uniform cuticle with few disruptions. Periderm suberization of Crataegus stems was variable and extensive peridermal cracking was evident. Cuticle wax decreased with increasing distance from the stem apex for both species. Collectively, results indicated that hawthorn stems had more pathways for water loss than maple shoots. While protection of roots of all bare-root stock is important, desiccation sensitive species such as Washington hawthorn require both root and shoot protection during storage and at transplanting to minimize water loss.en
dc.description.degreePh. D.en
dc.format.extentxi, 87 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06072006-124209en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06072006-124209/en
dc.identifier.urihttp://hdl.handle.net/10919/38559en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.B383.pdfen
dc.relation.isformatofOCLC# 31212965en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.B383en
dc.subject.lcshCold storageen
dc.subject.lcshCrataegus phaenopyrum -- Effect of cold onen
dc.subject.lcshCrataegus phaenopyrum -- Storageen
dc.subject.lcshNorway maple -- Effect of cold onen
dc.subject.lcshNorway maple -- Storageen
dc.subject.lcshPlants -- Transpirationen
dc.titleCharacterization of water stress during cold storage and establishment for Acer platanoides and Crataegus phaenopyrumen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineHorticultureen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V856_1994.B383.pdf
Size:
7.88 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Doctoral Dissertations