EMS induced intercellular chromatin transmigration in Papaver somniferum L

Girjesh Kumar and Sana Naseem
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Girjesh Kumar: Plants Genetics Laboratory, Department of Botany, University of Allahabad, Allahabad, India
Sana Naseem: Plants Genetics Laboratory, Department of Botany, University of Allahabad, Allahabad, India

Czech Journal of Genetics and Plant Breeding, 2013, vol. 49, issue 2, 86-89

Abstract: The phenomenon of chromatin migration was observed during microsporogenesis in an ethyl methane sulphonate (EMS) treated population of poppy, which is an important medicinal plant. Cytomixis occurred through a cytoplasmic channel or by direct fusion of pollen mother cells (PMCs); the former was more recurring than the latter. The process was associated with irregular meiosis. PMCs with differing chromosome numbers from the normal diploid number (2n = 22) through cytomixis may lead to the production of aneuploid and polyploid gametes. An increase in the concentration of EMS had a positive effect on the percentage of PMCs showing cytomixis. In addition to cytomixis, other chromosomal abnormalities were also found. Cytomixis along with the related chromosomal abnormalities largely affected the post-meiotic products resulting in some pollen sterility.

Keywords: cytomixis; ethyl methane sulphonate; microsporogenesis; pollen sterility; poppy (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:49:y:2013:i:2:id:85-2012-cjgpb

DOI: 10.17221/85/2012-CJGPB

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