Somatic embryogenesis, scanning electron microscopy, histology and biochemical analysis at different developing stages of embryogenesis in six date palm (Phoenix dactylifera L.) cultivars

Junaid Aslam, Saeed Ahmad Khan, Abdul Jaleel Cheruth, Abdul Mujib, Maheshwar Pershad Sharma, Prem Shanker Srivastava

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

An efficient somatic embryogenesis system has been established in six date palm (Phoenix dactylifera L.) cultivars (Barhee, Zardai, Khalasah, Muzati, Shishi and Zart). Somatic embryogenesis (SE) was growth regulators and cultivars dependent. Friable embryogenic callus was induced from excised shoot tips on MS medium supplemented with various auxins particularly 2,4-dichlorophenoxyacetic acid (2,4-D, 1.5mg1-l). Suspension culture increased embryogenesis potentiality. Only a-naphthaleneacetic acid (NAA, 0.5mg1-1) produced somatic embryos in culture. Somatic embryos germinated and converted into plantlets in N6-benzyladenine (BAP, 0.75mg1-l) added medium following a treatment with thidiazuron (TDZ, 1.0mg1-l) for maturation. Scanning electron microscopy showed early stages of somatic embryo particularly, globular types, and was in masses. Different developing stages of embryogenesis (heart, torpedo and cotyledonary) were observed under histological preparation of embryogenic callus. Biochemical screening at various stages of somatic embryogenesis (embryogenic callus, somatic embryos, matured, germinated embryos and converted plantlets) of date palm cultivars has been conducted and discussed in detail. The result discussed in this paper indicates that somatic embryos were produced in numbers and converted plantlets can be used as a good source of alternative propagation. Genetic modification to the embryo precursor cell may improve the fruit quality and yield further.

Original languageEnglish
Pages (from-to)369-380
Number of pages12
JournalSaudi Journal of Biological Sciences
Volume18
Issue number4
DOIs
Publication statusPublished - Oct 2011

Keywords

  • Amino acid
  • Amino acids
  • Date palm cultivars
  • Histological analysis
  • Protein
  • Scanning electron microscopy
  • Somatic embryogenesis
  • Sugar

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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