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Plant Cell, Tissue and Organ Culture

, Volume 46, Issue 1, pp 1–7 | Cite as

Stimulation of in vitro shoot proliferation from nodal explants of cassava by thidiazuron, benzyladenine and gibberellic acid

  • Basdeo Bhagwat
  • Luiz G. F. Vieiral
  • Larry R. Erickson
Original Research Papers

Abstract

Multiple shoots were produced from nodal explants of cassava (Manihot esculenta Crantz) by a two-step procedure: a 6- to 8-day exposure to 0.11–0.22 µM thidiazuron (TDZ) in liquid Murashige and Skoog (MS) medium followed by culture on agar-solidified MS medium supplemented with 2.2 µM 6-benzyladenine (BA) and 1.6 μM gibberellic acid (GA3). TDZ caused the nodal explants to expand and this expansion (growth) continued during culture with BA and GA3. From this expanded explant, clusters of buds and fasciated stems developed continuously and these gave rise to shoots. The shoot proliferation process was open-ended, yielding an average of 31.5 shoots per nodal explant after 10 weeks of culture with genotype CG 1–56. A positive response was also obtained from seven other genotypes evaluated with this protocol.

Key words

Manihot esculenta multiple shoots 

Abbreviations

BA

6-benzyladenine

BM

basal medium

DPU

1,3-diphenylurea

GA3

gibberellie acid

2iP

isopentenyladenine

MSM

multiple shoot medium

NAA

1-naphthaleneacetic acid

PGR

plant growth regulator

TDZ

thidiazuron

Z

zeatin

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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Basdeo Bhagwat
    • 1
  • Luiz G. F. Vieiral
    • 2
  • Larry R. Erickson
    • 1
  1. 1.Department of Crop ScienceUniversity of GuelphGuelphCanada
  2. 2.Instituto Agronomico do ParanaLondrina-ParanaBrazil

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