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A note on intraspecific cytomorphological comparison in two cytotypes (4x, 12x) of Potentilla atrosanguinea Lodd. from Cold Deserts of Ladakh, NW Himalayas, India

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Abstract

The present communication reports the record of intraspecific polyploids (4x, 12x) in Potentilla atrosanguinea from the cold deserts of Ladakh, India. The individuals of the specie showed morphogenetic variations in the studied area and two variants have been recoginized on the basis of flower colour and chromosome count. The study included the male meiosis, microsporogenesis, pollen fertility and morphometric parameters in the populations of 4 × and 12 × cytotypes. Both the polyploids exhibited normal meiotic behaviour characterized by normal chromosome pairing, regular segregation of chromosomes and high pollen fertility. The two cytotypes could be differentiated on the basis of size of stomata and pollen grains also, which are significantly larger in the 12 × compared to the 4x.

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Acknowledgments

The authors wish to thank the University Grants Commission, New Delhi for providing financial assistance under the DRS, SAP I, II and III, ASSIST programme and CSIR for providing Junior Research Fellowship to Nissar Ahmad Khan (Award letter no. 09/140(0173)/2018-EMR-I). The authors are also thankful to the Head Department of Botany, Punjabi University, Patiala and Co-ordinator Sophisticated Instrumentation Centre, Punjabi University, Patiala for providing necessary laboratory facilities.

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  1. Department of Botany, Faculty of Life Sciences, Punjabi University, Patiala, Punjab-147002, India

    Nissar Ahmad Khan, Vijay Kumar Singhal & Raghbir Chand Gupta

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  1. Nissar Ahmad Khan
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  2. Vijay Kumar Singhal
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  3. Raghbir Chand Gupta
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Correspondence to Nissar Ahmad Khan.

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Khan, N.A., Singhal, V.K. & Gupta, R.C. A note on intraspecific cytomorphological comparison in two cytotypes (4x, 12x) of Potentilla atrosanguinea Lodd. from Cold Deserts of Ladakh, NW Himalayas, India. Nucleus 64, 225–228 (2021). https://doi.org/10.1007/s13237-020-00325-0

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