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:
    title: Ecological distribution and anatomical development of Dioscorea Alata L. and D.Esculenta (LOUR.) Burkill in Kelantan and Terengganu, Malaysia
  name:
    name part: Nor Azahana Abdullah
    role:
      role term: creator
    role:
      role term: author
  name:
    name part: Universiti Sultan Zainal Abidin
    name part: Faculty of Agriculture, Biotechnology and Food Sciences
  type of resource: text
  genre: Dissertations, Academic
  origin info:
    place:
      place term: my
    date issued: 2012
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xvi, 179 leaves : illustrations(some colour) ; 31 cm.
  abstract: A total of 52 accessions of Dioscorea alata L. and 23 of D. esculenta (Lour). Burkill were collected in the states of Terengganu and Kelantan. The morfological features of both species were characterized. Accession of D. alata was evaluated anatomically at different stages of growth using histological technique and scanning electron microscope. Morphological variations were demonstrated in the accession of D. alata and D. esculenta in the leaf and tuber characteristics. Tip of leaf apical meristem, dome shape and later knob formed at the base. The knob extended to develop into the leaf primordium. Leaf initiation showed a decussate arrangement. The leaf upper epidermis was thicker than the lower one. The palisade tissue started as a dense tissue without any clear shape but later became elongated. The spongy layer in the early stage was without any clear shape and contained many cells which were stained red, indicating the presence of tannin. These stages require much protection which was given by the presence of the chemical. Further protection was given by the glands and raphides. The midrib, the xylem tissue was located at the upper part and the phloem at the lower region. The development of the leaf can be followed easily by the formation of xylem vessel, its number and thickness of the secondary wall. Early structural changes in the stem ocured below the shoot apical meristem where the epidermis, ground tissue and protoxylem were observed. Further changes were the formation of radial division from the centre of the stem towards the cortex. Within these radial divisions, the number and size of xylem vessels increased. A closer look among the xylem vessels showed the presence of phloems with the identification of sieve plates. Pith was present like the eudicots. Sclerenchyma tissue formed between the cortex and the inner ground tissue. The vascular tissue appeared as few small pore formations in the root and developed into many larger pores radially without format…
  table of contents: 1. Introduction -- 2. Literature review -- 3. Methodology -- 4. Results and discussion -- 5. General discussion -- 6. Conclusion and rocommendation
  note: Nor Azahana Abdullah
  note: Thesis (Ijazah Sarjana Sains) - Universiti Sultan Zainal Abidin, 2012
  note: Includes bibliographical references (leaves 141-151)
  subject:
    name:
      name part: Universiti Sultan Zainal Abidin
    topic: Dissertations
  subject:
    name:
      name part: Universiti Sultan Zainal Abidin
    topic: Faculty of Agriculture, Biotechnology and Food Sciences
    genre: Dissertations
  subject:
    topic: Morphology
  classification: QK495.D54 N67 2012
  record info:
    record content source: UniSZA
    record creation date: 131014
    record change date: 20200723093000.0
    record identifier: 0000085865