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Karyomorphology of three species of Haworthia Duval (Xanthorrhoeaceae)

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Abstract

Karyomorphological studies were carried on three species of Haworthia Duval (family: Xanthorrhoeaceae) namely H. radula (Haw.) Duval, H. glauca Bak.var. herrei and H. limifolia Marl.var. keithii. Karyotyping through Image Analyzing System in three species of Haworthia (family: Xanthorrhoeaceae) reflected karyotypic orthoselection with same basic chromosome number (x = 7) and bimodal karyotype. In H. radula (2n = 14) two satellites were found one in each on the long arm of the two long chromosomes. H. glauca var. herrei and H. limifolia var. keithii possessed 2n = 28 somatic chromosomes. In addition pollen mitosis of each species was done. Pollens are endowed with expected number of n = 7 and bimodal chromosomes. Therefore karyotyping through Image Analyzing System suggests that H. radula is diploid (2n = 14) whereas H. glauca var. herrei and H. limifolia var. keithii are autotetraploid (2n = 28) plants.

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Acknowledgments

Pulakesh Parai acknowledges the University Grants Commission, New Delhi, for granting a Minor Research Project in Science (Grant no. PSW-106/11-12/ERO). The authors would like to thank the Coordinator, CAS in Botany, University of Calcutta and also the Department of Botany, Taki Government College for providing laboratory facilities.

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Authors and Affiliations

  1. Department of Botany, Taki Government College, 24 Parganas (N), Taki, 743429, India

    Pulakesh Parai

  2. Department of Botany, Charuchandra College, Kolkata, 700024, India

    Anshuman Saha

  3. Cell Biology Laboratory, Department of Botany, University of Calcutta, Kolkata, 700019, India

    Pulakesh Parai, Anshuman Saha & Anita Mukherjee

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  1. Pulakesh Parai
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  2. Anshuman Saha
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  3. Anita Mukherjee
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Correspondence to Anita Mukherjee.

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Parai, P., Saha, A. & Mukherjee, A. Karyomorphology of three species of Haworthia Duval (Xanthorrhoeaceae). Nucleus 55, 143–148 (2012). https://doi.org/10.1007/s13237-012-0070-4

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  • DOI: https://doi.org/10.1007/s13237-012-0070-4

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