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Biologia




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Volume 63, Issue 5

Issues

In vitro propagation of an endangered plant species, Thermopsis turcica (Fabaceae)

Suleyman Cenkci / Mustafa Kargioglu / Sergun Dayan / Muhsin Konuk
Published Online: 2008-09-11 | DOI: https://doi.org/10.2478/s11756-008-0125-9

Abstract

This report deals with micropropagation of the critically endangered and endemic Turkish shrub, Thermopsis turcica using callus, root and cotyledonary explants. Callus cultures were initiated from root and cotyledon explants on MS medium supplemented with 0.5–20 µM NAA or 2,4-D. The root explants were found to be better in terms of quick responding and callusing percentages as compared to the cotyledons. Organogenic callus production with adventitious roots and shoots were obtained on MS medium with only NAA. The calli obtained with NAA, root and cotyledonary explants were cultured with BA and kinetin (2–8 µM) alone or in combination with a low level (0.5 µM) of 2,4-D or NAA. The best regeneration of shoots from root explants was observed on hormone-free MS medium. NAA with BA or kinetin in the medium improved shoot induction from the calli obtained with NAA. Maximum percentage of shoots (93.3%), maximum number of shoots (6.2) and maximun length of shoots (8.22 cm) were achieved from cotyledonary explants at 4 µM BA and 0.5 µM NAA. The presence of 0.5 µM or higher levels of 2,4-D in shoot induction medium inhibited the regeneration in T. turcica explants. 83% of in vitro rooting was attained on pulsed-IBA treated shoots. The regenerated plants with well developed shoots and roots were successfully acclimatized. Application of this study’s results has the potential to conserve T. turcica from extinction.

Keywords: Thermopsis turcica; endangered; in vitro propagation; 2,4-D inhibition

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About the article

Published Online: 2008-09-11

Published in Print: 2008-10-01


Citation Information: Biologia, Volume 63, Issue 5, Pages 652–657, ISSN (Online) 1336-9563, ISSN (Print) 0006-3088, DOI: https://doi.org/10.2478/s11756-008-0125-9.

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© 2008 Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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