CC BY 4.0 · AIMS Genet 2019; 06(01): 001-010
DOI: 10.3934/genet.2019.1.1
Research Article

Cd2+ + Cr6+ causes toxic effects on chromosomal development of microspore in Carthamus tinctorius

Neha Mittal
1   Department of Botany C.C.S. University Meerut-250004, India
Anand Kumar Srivastava
1   Department of Botany C.C.S. University Meerut-250004, India
1   Department of Botany C.C.S. University Meerut-250004, India
› Author Affiliations


Intra-category hybrids of Carthamus tinctorius were analyzed for the genetic toxicity in detail for effect of Cd2+ + Cr6+ on reproductive biology of Carthamus tinctorius. Five partially tolerant and five non-tolerant accessions of Carthamus tinctorius after screening were crossed to produce intra-category hybrid. These two heavy metals in combination influenced antagonistically first as well as second meiotic divisions inducing various kinds of anomalies and reduced the number of pollen grains per anther and significantly increased pollen sterility. A differential response for the amount of meiotic irregularity was recorded between different treated sets of hybrids in (Cd + Cr) treated sets. This could be due to differential response of the genotypes for the same concentration of (Cd + Cr). These two heavy metals in combination reduced the number of pollen grains per anther and significantly increased pollen sterility.

Publication History

Received: 02 March 2019

Accepted: 29 March 2019

Article published online:
15 March 2021

© 2019. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (

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