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

Neha Mittal; Anand kumar Srivastava; Neha Mittal; Anand kumar Srivastava

doi:10.3934/genet.2019.1.1

AIMS Genetics

2019, Volume 6, Issue 1: 1-10. doi: 10.3934/genet.2019.1.1

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Research article

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

Neha Mittal ^,,
Anand kumar Srivastava

Department of Botany C.C.S. University Meerut-250004, India

Received: 02 March 2019 Accepted: 29 March 2019 Published: 10 April 2019

Intra-category hybrids of Carthamus tinctoriuswere analyzedfor the genetic toxicityin detail for effect of Cd²⁺+Cr⁶⁺on reproductive biology of Carthamus tinctorius.Five partially tolerant and five non-tolerant accessions of Carthamus tinctoriusafter 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.
- Carthamus tinctorius,
- Cd²⁺+Cr⁶⁺,
- Meiotic changes,
- intra-category hybrids,
- chromosomal abnormalities,
- pollen grains
Citation: Neha Mittal, Anand kumar Srivastava. Cd2++Cr6+causes toxic effects on chromosomal development of microspore in Carthamus tinctorius[J]. AIMS Genetics, 2019, 6(1): 1-10. doi: 10.3934/genet.2019.1.1

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Abstract

Intra-category hybrids of Carthamus tinctoriuswere analyzedfor the genetic toxicityin detail for effect of Cd²⁺+Cr⁶⁺on reproductive biology of Carthamus tinctorius.Five partially tolerant and five non-tolerant accessions of Carthamus tinctoriusafter 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.

Acknowledgments

The author acknowledge to the DST for providing INSPIRE fellowship.

References

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