Assessment of somatic embryogenesis potency in Indian soybean [Glycine max (L.) Merr.] cultivars

Indian J Exp Biol. 2013 Oct;51(10):849-59.

Abstract

Majority of the Indian soybean cultivars are recalcitrant to tissue culture regeneration. The present communication reports the development of somatic embryogenesis in a liquid culture medium from immature cotyledons of G. max. Following induction with 2,4-dichlorophenoxyacetic acid (2,4-D) or naphthalene acetic acid (NAA), the number of somatic embryos and percentage of explants that responded were higher with 45.24 microM 2,4-D. The proliferation of somatic embryos for three successive cycles was achieved in 22.62 microM 2,4-D. Histodifferentiation of somatic embryos under NAA (10.74 microM) indicated that better embryo development and maturation was achieved without any growth regulator. The amino acids such as L-glutamine favoured the somatic embryo induction and histodifferentiation at 20 and 30 mM respectively, where as L-asparagine at 10 mM concentration enhanced the somatic embryo proliferation. In addition, somatic embryos that were desiccated (air-drying method) for 5 days showed better germination (40.88%). The Indian soybean cultivars also showed strict genotypic influence and cv. Pusa 16 was emerged as a best responding cultivar for somatic embryo induction with 74.42% of response.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acclimatization / drug effects
  • Acclimatization / physiology
  • Amino Acids / pharmacology
  • Cell Differentiation / drug effects
  • Cell Proliferation / drug effects
  • Cotyledon / drug effects
  • Cotyledon / growth & development
  • Cotyledon / physiology
  • Desiccation
  • Germination / drug effects
  • Germination / physiology
  • Glycine max / drug effects
  • Glycine max / embryology*
  • Glycine max / growth & development
  • Glycine max / physiology
  • Plant Growth Regulators / pharmacology
  • Plant Somatic Embryogenesis Techniques / methods*

Substances

  • Amino Acids
  • Plant Growth Regulators