Cover Image

Chromosomal diversity among different ecotypes of Acorus calamus l. Reported from Ranchi, Jharkhand, India

Kamini Kumar, Madhumita Singh*

Abstract


The chromosomal diversity was studied among ten ecotypes of the medicinally important genus Acorus Calamus L. from Jharkhand, India and their chromosome counts have been reported for the first time. The chromosome number and size are discussed in finding and phylogeny, evolution and interrelationship of taxa. The ten ecotypes of Acorus calamus reveal differences in chromosome number i.e. 2n = 14, 18, 21, 27 with diploid, triploid and tetraploid status. Detailed chromosome analysis of the ecotypes reveals heterogeneity in size, form and number of chromosomes between dissimilar ploidy level cytotypes. This is suggestive of the incidence of alteration in chromosome structure. The aberration coupled with ploidy appears to have played a major role in evolution among these ecotypes. The occurrence of chromosomal variations generates flexible variations among the ecotypes which are sustained through vegetative propagation. The karyomorphological studies provide a insight into role of chromosomal and genomic versatility in diversification of the species.

Keywords


Acorus calamus; Chromosomal diversity; Ecotypes.

Full Text:

PDF


DOI: http://dx.doi.org/10.21746/ijbio.2015.02.006

Refbacks

  • There are currently no refbacks.




Copyright (c) 2015 International Journal of Bioassays

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

International Journal of Bioassays is a member of the Publishers International Linking Association, Inc. (PILA), CROSSREF and CROSSMARK (USA). Digital Object Identifier (DOI) will be assigned to all its published content.