Rubus spp. seed germination and morphology Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/7m01bn831

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Rubus spp. seeds have a thick protective endocarp and testa (seedcoat) that can restrict germination even under favorable conditions. The effect of pregermination treatments were studied in Rubus chamaemorus L., R. eustephanos Focke ex Diels, R. idaeus 'Amber' L., R. leucodermis Douglas ex Torrey & A. Gray, R. multibracteatus A. Leveille & Vaniot, R. parviflorus Nutt., and R. ursinus Cham. & Schldl.. Scarifying agents such as, sulfuric acid (H₂SO₄), sodium hypochlorite (NaOCl), calcium hypochlorite (CaO₂Cl₂), driselase, liquid nitrogen (LN₂), and others, were used as pregermination treatments. Sulfuric acid significantly increased percent germination in most of the Rubus spp. tested. Sodium hypochlorite above 2.6% injured seedlings of several species whereas lower concentrations were effective for scarification without seedling injury. Driselase did not significantly increase percent germination. This may have been due to little or no scarification of the endocarp at the 1-3% concentration range used. Liquid nitrogen did not significantly increase percent germination, however, it did not reduce overall percent germination as compared to the control. No loss of viability of Rubus seeds was found even with repeated immersions in LN₂. Cryogenic storage may thus be an effective way for preservation of Rubus seeds. The recommended pregermination treatments for most of the Rubus species studied, ranked in order of effectiveness, were concentrated H₂SO₄ followed by a 1 % CaO₂Cl₂ solution with an excess of Ca(OH)₂, concentrated H₂SO₄, 0.5% NaOCl or 2.6% NaOCl if the particular Rubus species does not show a sensitivity to high concentrations of NaOCl, and no treatment.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Scamax Scan+ V.1.0.32.10766 on a Scanmax 412CD by InoTec in PDF format. LuraDocument PDF Compressor V.5.8.71.50 used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Erin Clark (ecscannerosu@gmail.com) on 2011-11-09T20:11:47Z No. of bitstreams: 1 PEACOCKDEREKN1996.pdf: 1279069 bytes, checksum: dac5babce6f00f2eaaeb1f7e2c09897e (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2011-11-22T17:48:26Z (GMT) No. of bitstreams: 1 PEACOCKDEREKN1996.pdf: 1279069 bytes, checksum: dac5babce6f00f2eaaeb1f7e2c09897e (MD5)
  • description.provenance : Made available in DSpace on 2011-11-22T17:48:26Z (GMT). No. of bitstreams: 1 PEACOCKDEREKN1996.pdf: 1279069 bytes, checksum: dac5babce6f00f2eaaeb1f7e2c09897e (MD5) Previous issue date: 1995-08-30
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2011-11-10T22:51:40Z (GMT) No. of bitstreams: 1 PEACOCKDEREKN1996.pdf: 1279069 bytes, checksum: dac5babce6f00f2eaaeb1f7e2c09897e (MD5)

Relationships

In Administrative Set:
Last modified: 08/02/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items