rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: A
    title: phenotypic evaluation of 61 mutated lines of TAM 94L-25
  name:
    name part: Brown, Ismael Nino.
    role:
      role term: creator
  name:
    name part: Smith, Wayne
    role:
      role term: thesis advisor.
  name:
    name part: Hague, Steve S.
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2011
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Among the available methods of creating selectable variation, induced mutagenesis has been historically under-utilized in cotton improvement. Dick Auld showed that chemical mutagenesis could be used to enhance fiber length of a medium staple cotton cultivar without sacrificing yield. The goal of this project was to determine if mutagenesis could be used to improve the fiber quality of a germplasm line already considered to be at the upper-limits of fiber length. Seed of TAM 94 L-25 were treated with EMS in 2001 and the M₂ generation was produced at Lubbock, Texas in 2002. More than 1200 M₃ plants were grown at College Station, Texas in 2004, harvested individually, and HVI fiber properties determined. The top and bottom 1% for UHML, strength, and elongation were selected and the seeds of these individuals planted as an M₄ progeny row nursery in 2005. Approximately ten individual plants per progeny row were harvested for re-evaluation of fiber parameters. From the approximately 1600 individual TAM 94L-25 M₄ plants harvested in 2005, 61 were selected and subsequently treated as pure lines. Agronomic performance trials were conducted on 61 of those TAM 94L-25 M lines along with the M₀ check and two commercial cultivar checks, Fiber Max 832 and Phytogen 355, in 2008 and 2009 in College Station and Weslaco, Texas. Within-boll yield components were examined for 13 representative mutant lines and the three checks. TAM 94L-25 averaged 751 kg lint ha⁻¹, 31.1 mm UHML, 303 kN m kg⁻¹ fiber bundle strength, and 6.0 percent elongation. The 61 mutant lines yielded from 366 to 932 kg lint ha⁻¹, exhibited UHML from 24.3 to 34.9 mm, fiber bundle strengths of 261 to 333 kN m kg⁻¹, and elongations from 5.4 to 8.1 percent. Seed surface area of the TAM 94L-25 M-lines was between 99 and 124 mm², and fibers per unit seed surface area from 123 to 168 fibers mm⁻². The M₀ parent, TAM 94L-25 averaged 125 mm² seed⁻¹, and 128 fibers mm⁻². The data presented herein demonstrate that EMS-induced mu…
  note: by Ismael Nino Brown.
  note: "Major Subject: Plant Breeding"
  note: Title from author supplied metadata (automated record created 2011-02-28 11:02:00).
  note: Electronic resource.
  note: Master of Science Texas A&M University 2010 http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8898
  note: Includes bibliographical references.
  note: Text (Thesis)
  subject:
    topic: Major plant breeding
  subject:
    topic: chemical mutagenesis
  subject:
    topic: lint yield
  subject:
    topic: seed surface area
  subject:
    topic: fiber quality
  subject:
    topic: cotton
  subject:
    topic: EMS
  identifier: http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8898
  record info:
    record content source: TXA
    record creation date: 110308
    record change date: 20151202115710.0
    record identifier: in00002656279