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Somatic embryogenesis and regeneration of Cenchrus ciliaris genotypes from immature inflorescence explants

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Biologia Plantarum

Abstract

An efficient, highly reproducible system for plant regeneration via somatic embryogenesis was developed for Cenchrus ciliaris genotypes IG-3108 and IG-74. Explants such as seeds, shoot tip segments and immature inflorescences were cultured on Murashige and Skoog (MS) medium supplemented with 2.0–5.0 mg dm−3 2,4-dichlorophenoxyacetic acid (2,4-D) and 0.5 mg dm−3 N6-benzyladenine (BA) for induction of callus. Callus could be successfully induced from all the three explants of both the genotypes. But the high frequency of embryogenic callus could be induced only from immature inflorescence explants. Somatic embryos were formed from nodular, hard and compact embryogenic calli when 2,4-D concentration was gradually reduced and BA concentration increased. Histological studies of somatic embryos indicated the presence of shoot apical meristem with leaf primordia. Ultrastructural details of globular and scutellar somatic embryos further validated successful induction and progression of somatic embryogenesis. Shoots were differentiated upon germination of somatic embryos on MS medium containing 2,4-D (0.25 mg dm−3) and BA or kinetin (1–5 mg dm−3). Roots were induced on ½ MS medium containing charcoal (0.8 %), and the regenerated plants transferred to pots and established in the soil showed normal growth and fertility.

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Abbreviations

BA:

N6-benzyladenine

2,4-D:

2,4-dichlorophenoxyacetic acid

SE:

somatic embryogenesis

IBA:

indole-3-butyric acid

NAA:

α-napthaleneacetic acid

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Authors and Affiliations

  1. Department of Botany, University of Delhi, Delhi, 110007, India

    C. B. Yadav, P. Jha, C. Mahalakshmi, V. Anjaiah & V. Bhat

Authors
  1. C. B. Yadav
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  2. P. Jha
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  3. C. Mahalakshmi
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  4. V. Anjaiah
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  5. V. Bhat
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Corresponding author

Correspondence to V. Bhat.

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Acknowledgements: The authors gratefully acknowledge the Director, Indian Grassland and Fodder Research Institute, Jhansi, for kindly providing seed materials for this study. We thank Dr. S. Gupta and Mr. P. Kesharvani for their help in data analysis, and Mr. S.K. Dass for the help with photography.

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Yadav, C.B., Jha, P., Mahalakshmi, C. et al. Somatic embryogenesis and regeneration of Cenchrus ciliaris genotypes from immature inflorescence explants. Biol Plant 53, 603–609 (2009). https://doi.org/10.1007/s10535-009-0111-2

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  • DOI: https://doi.org/10.1007/s10535-009-0111-2

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