We analyzed DNA damage, mitotic activity and polyploidization in Crepis capillaris callus cells during shortand long-term in vitro culture, and the influence of plant growth regulators on these processes. Changes in the concentration of growth regulators altered the stability of callus. The level of DNA damage was highly dependent on the growth regulator composition of the medium. Cytokinin at ...

the aim of this study was to evaluate and compare the sensitivity of plant bioassays:tradescantia-micronucleus (trad-mcn) tests using bnl 02 and 4430 clones, and crepis capillaris hairyroots chromosome aberrations test. the evaluation of the sensitivity of the tests was based on the example of the analysis of the genotoxicity of water samples from two natural water reservoirs in poland: the raw...

The chromosomes of Crepis capillaris were labelled with thymidine-2-C(14) in their DNA fraction. Quantitative analysis of the distribution of newly synthesized DNA in postmetaphase stages of the division following the period of label incorporation led to the conclusion that the new DNA is not necessarily equally distributed by the mitotic process and that, therefore, chromosome duplication does...

Analyses of DNA from tumorous and non tumorous cultures of Crepis capillaris by analytical equilibrium centrifugation in a neutral CsCl gradient revealed significant differences in regard to the content of a heavy component satellite, which was more highly represented in tumorous cultures. DNA of plant leaves showed a unimodal distribution of molecules. The choice of suitable controls served to...