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Direct shoot regeneration from leaf explants of Spilanthes acmella

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Biologia Plantarum

Abstract

Multiple shoots of Spilanthes acmella Murr. were induced from nodal buds of in vivo and in vitro seedlings on Murashige and Skoog (MS) medium containing 1.0 mg dm−3 6-benzyladenine (BA) and 0.1 mg dm−3 α-naphthalene-acetic acid (NAA). Adventitious shoots were successfully regenerated from the leaf explants derived from the above mentioned multiple shoots. The efficiency of shoot regeneration was tested in the MS medium containing BA, kinetin, or 2-isopentenyl adenine in combination with NAA, indole-3-acetic acid (IAA), or indole-3-butyric acid (IBA) and gibberellic acid. Maximum number of shoots per explant (20 ± 0.47) was recorded with 3.0 mg dm−3 BA and 1.0 mg dm−3 IAA. An anatomical study confirmed shoot regeneration via direct organogenesis. About 95 % of the in vitro shoots developed roots after transfer to half strength MS medium containing 1.0 mg dm−3 IBA. 95 % of the plantlets were successfully acclimatized and established in soil. The transplanted plantlets showed normal flowering without any morphological variation.

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Abbreviations

BA:

6-benzyladenine

GA3 :

gibberelic acid

IAA:

indole-3-acetic acid

IBA:

indole-3-butyric acid

2-iP:

2-isopentenyl adenine (2-γ,γ-dimethylallyl aminopurine)

Kn:

kinetin

NAA:

α-naphthalene acetic acid

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Authors and Affiliations

  1. Plant Biotechnology Division, Department of Biotechnology, Sri Venkateswara University, Tirupati, 517502, Andhra Pradesh, India

    K. V. Saritha & C. V. Naidu

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  1. K. V. Saritha
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  2. C. V. Naidu
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Correspondence to C. V. Naidu.

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Saritha, K.V., Naidu, C.V. Direct shoot regeneration from leaf explants of Spilanthes acmella . Biol Plant 52, 334–338 (2008). https://doi.org/10.1007/s10535-008-0068-6

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  • DOI: https://doi.org/10.1007/s10535-008-0068-6

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