Variation of RBE between p(75) + Be and d(50) + Be Neutrons Determined for Chromosome Aberrations in Allium cepa

1992 ◽  
Vol 130 (3) ◽  
pp. 275 ◽  
Author(s):  
M. Beauduin ◽  
G. Laublin ◽  
M. Octave-Prignot ◽  
J. Gueulette ◽  
A. Wambersie
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
P 75

A STUDY ON THE RADIOPROTECTIVE PROPERTY OF THIOUREA AGAINST RADIATION-INDUCED CHROMOSOME DAMAGE

1970 ◽  
Vol 12 (4) ◽  
pp. 685-688 ◽  
Author(s):  
S. B. Reddy
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
Chromosome Damage ◽  
Radioprotective Property ◽  
Root Tips ◽  
Anaphase Bridges ◽  
Chromosome Fragments ◽  
X Irradiation ◽  
Radiation Induced ◽  
Germinating Seeds

The protective ability of thiourea in five different concentrations ranging from 5 × 10−2M to 1 × 10−5M has been demonstrated on chromosome aberrations in root tips of Allium cepa exposed to 350r X-irradiation. It was shown that protection against radiation-induced chromosome fragments and anaphase bridges was attained when the germinating seeds had been treated with thiourea for 1 hour prior to irradiation.

scholarly journals On the effects of secretions of saprophytic bacteria on the course of mitosis in adventitious roots of Allium cepa L.

2015 ◽  
Vol 42 (1) ◽  
pp. 171-179
Author(s):  
Z. Kobierzyńska
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
Adventitious Roots ◽  
Bacterial Strains ◽  
Liquid Cultures ◽  
Allium Cepa L

The influence of 21 strains of saprophytic bacteria isolated from onion cultures on the course of mitosis and on the level of chromosome aberrations in adventitious roots of <i>Allium cepa</i> L. was studied. Liquid cultures of all bacterial strains caused no changes in divisions of the cells. However, ten of the strains were responsible for disturbances in this process. The nature of these disturbances depended to a large extent on the kind of medium in which the bacteria were grown.

scholarly journals Introductory studies of bacterial effects on the course of mitosis in adventitious roots of Allium cepa L.

2015 ◽  
Vol 41 (2) ◽  
pp. 205-216
Author(s):  
J. Cebrat ◽  
K. Czerwińska ◽  
K. Bohdanowicz-Murek
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
Adventitious Roots ◽  
Water Culture ◽  
Meristematic Cells ◽  
Allium Cepa L ◽  
Spontaneous Chromosome

The level of spontaneous chromosome aberrations and other phenomena concomitant with mitoses in the meristematic cells of <i>Allium cepa</i> L. adventitious roots grown in water, depends to a large extent on the intensity of bacteria multiplication. From the water culture two strains of bacteria, which were most numerous, were isolated - <i>Agrobacterium</i> and <i>Flavobacterium</i>. A supernatant from bacteria grown on Davis medium induced chromosome sticking together, c-mitoses and the formation of polyploid nuclei in the roots of onion.

scholarly journals Chromosomal aberrations induced by cassava industrial effluent using Allium Cepa assay

2020 ◽  
Vol 13 (3) ◽  
pp. 097-104
Author(s):  
Gbenga Olorunshola Alege ◽  
Chinenye Sylvia Anyoku ◽  
Comfort Kehinde Olubiyo ◽  
Gloria Taiye Olubiyo ◽  
Blessing Adejoh ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
Industrial Effluent ◽  
World Health ◽  
Cytotoxic Activities ◽  
Time Data ◽  
Root Cells ◽  
Significant Difference ◽  
Compliance To Treatment ◽  
Health Organization

This study assessed the heavy metal compositions and chromosome aberrations induced by cassava industrial effluent using Allium cepa meristem assay. Effluent collected at the point of discharge from the cassava processing factory located at Lokoja, Kogi State Nigeria was analyzed for quantity of Cadmium (Cd), Chromium (Cr), Copper (Cu), Manganese (Mn), Iron (Fe), Nickel Ni, Cobalt (Co) and Lead (Pb) using Atomic Absorption Spectrophotometer method. Onion (Allium cepa) roots were allowed to grow in beakers containing different concentrations of cassava industrial effluent (i.e. 25%, 50%, 75% and 100%) and the control for 24 hours. Harvesting of the tips for chromosome observations was carried out between 8:00 to 9:00am West Africa Time. Data pooled under X400 magnification of the light microscope for mitotic phases and chromosome aberrations were analyzed using Analysis of Variance (ANOVA) while means with significant difference across concentrations were separated using Duncan Multiple Range Test (DMRT). The results revealed that only Cadmium (Cd) and Lead (Pb) concentrations in the effluent were higher than the minimum values recommended by World Health Organization. The effluent also produce binucleate cells, variant chromosomes, C-mitosis, vacuolated cells, tripolar anaphase and anaphase bridge which suggests the mutagenic and cytotoxic activities of the industrial effluent. The decrease in the Mitotic Indices (MI) of effluent-treated root cells compared to the control indicates mito-depressive ability of the effluent at every concentration. Regular monitoring of industries for compliance to treatment of effluent before releasing them into the environment is recommended.

Preventive Effect of Lycopene on Chromosome Aberrations in Allium cepa

2005 ◽  
Vol 8 (3) ◽  
pp. 482-486 ◽  
Author(s):  
Ozlem Sultan Aslantu . ◽  
Tulay Askin Celik .
Keyword(s):  
Allium Cepa ◽  
Chromosome Aberrations ◽  
Preventive Effect
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