[The chiral mutagens: cytogenetic effects on higher plants].
Tsitol Genet
; 45(4): 36-43, 2011.
Article
en 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.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Triticum
/
Núcleo Celular
/
Aberraciones Cromosómicas
/
Cromosomas de las Plantas
/
Mitosis
/
Mutágenos
/
Compuestos de Nitrosourea
Idioma:
Ru
Revista:
Tsitol Genet
Año:
2011
Tipo del documento:
Article