ULTRAVIOLET AND X-RAY INDUCED CHROMOSOMAL ABERRATIONS IN WHEAT
نویسندگان
چکیده
منابع مشابه
An Analysis of X-Ray Induced Chromosomal Aberrations in Tradescantia.
HE cause and nature of chromosomal alterations has become an imT portant genetic problem since it has been shown that both mutation and speciation often are associated with structural alterations of the chromosomes (DOBZHANSKY 1937). The frequency of spontaneous structural changes is too low in most organisms to permit a statistical analysis of types or frequencies of alterations, although rece...
متن کاملmicronuclei versus chromosomal aberrations induced by x-ray in radiosensitive mammalian cells.
an experimental study was accomplished to compare estimation methods of ionizing radiations genotoxicity in mammalian cell cultures by means of two cytogenetic parameters with focus on aberrant cells characterized by multiple chromosomal damages.in vitro study was carried out on the genotoxicity of low-medium doses of 190 kv x-rays absorbed in chinese hamster ovary cell cultures. micronuclei an...
متن کاملX-Ray and Ultraviolet Studies on Pollen Tube Chromosomes. I. the Effect of Ultraviolet (2537 A) on X-Ray-Induced Chromosomal Aberrations.
H E direct approach to the problem of the mechanism of chromosome T breakage and reattachment-namely, an analysis of the end results following radiation-has not as yet yielded a wholly satisfying answer, although our understanding of the limitations within which the mechanism operates has been considerably broadened, and its complexity has been recognized. An indirect approach has been made by ...
متن کاملPropranolol induced chromosomal aberrations in Chinese hamster ovary cell line
Propranolol (PL), a non-selective beta-blocker, is a cardiovascular drug widely used to treat hypertension. The present study was concerned with assessing the cytogenetic effects of this drug on Chinese hamster ovary (CHO) cell line. MTT assay was then carried out to determine the cytotoxicity index (IC50) of the drug. The IC50 value of PL was 0.43±0.02 mM. To investigate the clastogenic effect...
متن کاملMicronuclei versus Chromosomal Aberrations Induced by X-Ray in Radiosensitive Mammalian Cells
BACKGROUND An experimental study was accomplished to compare estimation methods of ionizing radiations genotoxicity in mammalian cell cultures by means of two cytogenetic parameters with focus on aberrant cells characterized by multiple chromosomal damages. METHODS In vitro study was carried out on the genotoxicity of low-medium doses of 190 kV X-rays absorbed in Chinese hamster ovary cell cu...
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ژورنال
عنوان ژورنال: Genetics
سال: 1957
ISSN: 1943-2631
DOI: 10.1093/genetics/42.5.623