EXPERIMENTALLY INDUCED CHROMOSOME ABERRATIONS IN PLANTS
نویسندگان
چکیده
منابع مشابه
Experimentally Induced Chromosome Aberrations in Plants
The discovery of Lilly and Thoday, that the presence of potassium cyanide (KCN) increases the production of chromosome aberrations by x-rays in anoxia, but has no effect on the production of chromosome aberrations by x-rays in air, was confirmed. In the presence of cyanide, the effect of a given dose of x-rays in nitrogen was found to be even greater than the effect of the same dose of x-rays i...
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The interest in the genetic and cytological effects of cyanide was greatly stimulated by the accumulation of data which indicated that hydrogen peroxide was involved in the production of mutations and chromosome aberrations by radiations (46, 43). If hydrogen peroxide is an important cause of mutation and chromosome breakage it would be expected that by inhibiting catalase and peroxidase (the e...
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The potential of higher plants as a first-tier assay system for detecting chemical mutagens is evaluated. The use of plant tissue (primarily root tips and pollen mother cells) for studying the induction of chromosomal aberrations is one of the oldest, simplest, most reliable, and inexpensive methods available. Specific types of abnormalities have been induced by different classes of pesticides....
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We review chromosome aberration modeling and its applications, especially to biodosimetry and to characterizing chromosome geometry. Standard results on aberration formation pathways, randomness, dose-response, proximity effects, transmissibility, kinetics, and relations to other radiobiological endpoints are summarized. We also outline recent work on graph-theoretical descriptions of aberratio...
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The classical cytogenetic assay relies on the scoring of chromosomal damage in cells at metaphase. According to the standard protocol the analysis is confined to cells at the 1st post-irradiation mitosis collected at one, early sampling time. For sparsely ionizing radiation this protocol allows a reasonable estimate of chromosomal damage, because in all commonly used cell system no or only a sl...
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ژورنال
عنوان ژورنال: The Journal of Biophysical and Biochemical Cytology
سال: 1957
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.3.3.381