Cytogenetic effects of cypermethrin and fenvalerate on the root meristem cells of Allium cepa

1999 ◽  
Vol 42 (3) ◽  
pp. 181-189 ◽  
Author(s):  
L.K.S. Chauhan ◽  
P.N. Saxena ◽  
S.K. Gupta
Keyword(s):  
Allium Cepa ◽  
Root Meristem ◽  
Cytogenetic Effects

scholarly journals Study of Mitotic Activity and Chromosomal Behaviour in Root Meristem of Allium cepa L. Treated with Magnesium Sulphate

2009 ◽  
Vol 15 ◽  
pp. 83-88 ◽  
Author(s):  
Prabhakar Bhatta ◽  
S. R. Sakya
Keyword(s):  
Key Words ◽  
Mitotic Activity ◽  
Allium Cepa ◽  
Biological System ◽  
Magnesium Sulphate ◽  
Root Meristem ◽  
Chromosomal Abnormalities ◽  
Inhibitory Effect ◽  
Duration Of Treatment ◽  
Chromosomal Behaviour

The mitotic activity and chromosomal behaviour was observed in four different concentrations of magnesium sulphate at four different duration of treatment using Allium cepa as a biological system. Mito-inhibitory effect of the compound was observed in higher concentration. The compound was capable of producing various chromosomal abnormalities indicating the cytostatic and clastogenic properties of magnesium sulphate. Key words: Allium cepa, magnesium sulphate, mitotic index, phase indices.doi: 10.3126/eco.v15i0.1947 ECOPRINT 15: 83-88, 2008

scholarly journals Cytogenetic effects of insecticide Lamda cyhalothrin on meristemic cells of Allium cepa L.

2008 ◽  
Vol 5 (2) ◽  
pp. 166-172
Author(s):  
Baghdad Science Journal
Keyword(s):  
Mitotic Index ◽  
Chromosome Aberration ◽  
Allium Cepa ◽  
Cytogenetic Effects ◽  
Binucleated Cells ◽  
Allium Cepa L ◽  
Spindle Fibers

The effect of insecticide lamda cyhalothrin on Allium cepa L.root meristem were studied cytogenetically .Using three concentrations of the insecticide 5%, 7.5%, 10% at 6,12,24hours treatments . The insecticide significantly reduced the mitotic index at all concentrations. Moreover showed its ability to induced C – metaphase in 10% .The effects were also caused chromosome aberration like stickness in anaphase, telophase, binucleated cells, Micronuclei formation. These alternations indicating that this insecticide was effective in producing disturbance of spindle fibers.

scholarly journals Genotoxicity of tetrodotoxin from puffer fish tested in root meristem cells of Allium cepa L.

Mutagenesis ◽  
1997 ◽  
Vol 12 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Samanta S. Khora ◽  
Kamal K. Panda ◽  
Brahma B. Panda
Keyword(s):  
Allium Cepa ◽  
Root Meristem ◽  
Allium Cepa L ◽  
Puffer Fish

scholarly journals ENIGMATIC INDUCTION OF CYTOMIXIS IN ALLIUM CEPA ROOT MERISTEM BY AGLAIA EDULIS ROXB. LEAF EXTRACT AND ITS PHYTOCHEMICAL RATIONALE

2020 ◽  
pp. 168-171
Author(s):  
ARCHANA ELAMKULAM RAVINDRAN ◽  
JOHN ERNEST THOPPIL
Keyword(s):  
Allium Cepa ◽  
Leaf Extract ◽  
Root Meristem ◽  
Methanolic Extract ◽  
Synergistic Action ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Phytochemical Analysis ◽  
Spectrometry Analysis ◽  
Dose Dependent

Objective: The present study aims to analyze the potential of Aglaia edulis Roxb. leaf extract to induce cytological aberrations in Allium cepa root meristem and to determine the phytoconstituents in the extract. Methods: Cytotoxicity evaluation of the leaf methanolic extract was done using Allium cepa assay using various concentrations. Volatile phytoconstituents in the extract were determined using gas chromatography–mass spectrometry analysis. Results: Considerable number of cytomictic cells along with other aberrations was observed. The occurrence of cytomixis was found to be dose dependent where it ranged from 6.58±0.35 to 29.45±0.45. The percentage of cytomictic cells among the total aberrant cells was observed between 35.19±1.67 and 77.39±1.39. The phytochemical analysis of the plant extract revealed the presence of active secondary metabolites. Conclusion: The synergistic action of the active compounds might have triggered the phenomenon of cytomixis which, in turn, could be exploited for the production of polyploids.

Genotoxicity of cadmium on root meristem cells of Allium cepa: cytogenetic and Comet assay approach

2008 ◽  
Vol 71 (3) ◽  
pp. 711-716 ◽  
Author(s):  
C.S. Seth ◽  
V. Misra ◽  
L.K.S. Chauhan ◽  
R.R. Singh
Keyword(s):  
Comet Assay ◽  
Allium Cepa ◽  
Root Meristem
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