[The chiral mutagens: cytogenetic effects on higher plants].
Tsitol Genet
; 45(4): 36-43, 2011.
Article
de Ru
| MEDLINE
| ID: mdl-21950141
ABSTRACT
The paper covers investigation of cytogenetic activity of chiral mutagens and their specific effects on the plant cells chromosomes of soft winter wheat (Triticum aestivum L.). Comparative analysis of cytogenetic activity of chiral NEU S(+)1-N-nitroso- 1-N-methyl-3-N-sec-buthylureas (S(+)NMsBU) and R(-)1-N-nitroso- 1N-methyl-3-Nsec-buthylureas (R(-)NMsBU) on winter wheat was performed. As it was shown by the frequency of chromosomal aberrations the S(+) stereoisomer was twice more active than R(-). In addition to typical anaphase aberrations (fragments, bridges, lagging chromosomes) the numerous mitosis pathologies were revealed - K-mitoses, hyperspiralization and despiralization of chromosomes, unequal allocation of chromosomes between the daughter nuclei, mass fragmentation, nondisjunction and chromosome adhesion, three-pole mitoses, etc. Neither of the mentioned pathologies was observed under the action of NEU and gamma-rays.
Recherche sur Google
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Triticum
/
Noyau de la cellule
/
Aberrations des chromosomes
/
Chromosomes de plante
/
Mitose
/
Mutagènes
/
Nitrosourées
Langue:
Ru
Journal:
Tsitol Genet
Année:
2011
Type de document:
Article