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Colchicine induced asynaptic chromosomal behavior at meiosis in Allium cepa L.

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Abstract

Two asynaptic plants were identified during meiosis from 0.2 % colchicine treated inflorescences for 12 h in Allium cepa. The asynaptic behavior could be noticed in early as well as at late diakinesis / metaphase-I. The chiasma frequency was very low as compared to control. At telophase-I/II, univalents created high abnormality. Unequal distributions, laggards, tripolar and micronuclei were found in asynaptic plants. Pollen fertility was found to be very low (55.1 and 52.6 %). Observations suggest that colchicine treatment impacts the meiosis of Allium cepa, suggesting that chromosomal associations in asynaptic plants are independent of meiotic behavior in the control.

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Acknowledgments

The authors thankfully acknowledge to Madhya Pradesh Council of Science and Technology, Bhopal for financial support.

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Authors and Affiliations

  1. School of Studies in Botany, Vikram University, Ujjain, MP, 456010, India

    Ramesh Ahirwar & R. C. Verma

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  1. Ramesh Ahirwar
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  2. R. C. Verma
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Correspondence to Ramesh Ahirwar.

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Ahirwar, R., Verma, R.C. Colchicine induced asynaptic chromosomal behavior at meiosis in Allium cepa L.. Nucleus 58, 47–51 (2015). https://doi.org/10.1007/s13237-015-0133-4

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