Influence of sodium phosphate (E 339) on mitotic division in Calendula officinalis L.

This paper includes the cytogenetic effects induced by sodium phosphate (E 339) food additive in meristematic cells of Calendula officinalis L. root tips. The increase of food additive concentration determined the decrease of mitotic index, while the frequency and the type of chromosome aberrations are much greater in treated variants, comparatively with control

INFLUENCE OF SODIUM PHOSPHATE (E 339) ON MITOTIC DIVISION IN TRIGONELLA FOENUM - GRAECUM L.

This paper includes the cytogenetic effects induced by sodium phosphate (E 339) food additive in meristematic cells of Trigonella foenum - graecum L. root tips. The increase of food additive concentration determined the decrease of mitotic index, while the frequency and the type of chromosome aberrations are much greater in treated variants, comparatively with control

EFFECTS INDUCED BY DIETHYL SULPHATE ON SOME CYTOGENETICAL PARAMETERS AND LENGTH GROWTH OF HEMP PLANTLETS

The hemp seeds were treated with diethyl sulphate, in four concentrations (0.1%, 0.25%, 0.5%, and 1%) and in two variants of alkylant exposure (3 and 6 hours). The length growth of plantlets, mitotic index and frequency of chromosomal aberrations were the analyzed parameters. Significant modifications were obtained at the level of parameters in variants treated with DES, comparatively with control

Some cytogenetic effects induced in barley by the treatments with hydroalcoholic rosemary extract

The paper presents some results regarding the cytogenetic effects induced in barley by the treatments with rosemary extract (Rosmarinus officinalis). It was proved that the treatment with this extract upon the barley caryopses had as effect the stimulation of the mitotic division in the radicle apex of the species and did not lead to important cytogenetic changes (chromosome aberrations) in the ana-thelophase of the radicle mitoses

Some citogenetic effects of sodium azide treatments in caraway root meristems

Sodium azide (NaN3) still remains a popular plant mutagen. In the present investigation, its effects on the cytogenetic changes were studied in root tip cells of Carum carvi L., an important economical and medicinal crop plant. The study revealed that sodium azide decreased mitotic index, and caused increase of chromosomal aberrations. Altogether, sodium azide treated root tip cells exhibited an increased incidence of bridges, lagging and/or expulsed chromosomes and C-metaphases

MITOTIC CHROMOSOMES STUDIES IN MEDICINAL PLANTS; L. ECHINACEA PURPUREA (L) MOENCH (2N = 22)

: The metaphase contains 22 chromosomes. We have found 3 types of chromosomes. This species presents au evolved karyotype

PRELIMINARY KARYOTYPE ANALYSIS IN MEMBERS OF ASTERACEAE FAMILY

: chromosome’s number were 2n=18 on Callistephus chinensis (China aster) and 2n=36 on Rudbeckia hirta (blackeyed susan). Until in Callistephus chinensis the chromosomes were found uniforms as dimension and morphology, in Rudbeckia hirta there are three morphological type

CYTOGENETIC EFFECTS INDUCED BY PHENOLIC COMPOUNDS IN LYCOPERSICON ESCULENTUM MILL

The aim of this paper is to evaluate the effects of the phenolic compounds extracted from spruce bark on cells from the radicular apex of Lycopersicon esculentum Mill. We found that different concentrations of polyphenols and the time of treatment modified the frequency of cells division and the number of mitotic ana-telophases with aberrations