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Well-rooted regenerants were subjected to colchicine treatment. attention has been paid to the functioning of root apical meristems, which serve as the
We next treated the meristems with two inhibitors of DNA synthesis, .. Likewise, cell cycle arrest in colchicine-treated roots from radish did not prevent the
The mature root meristem of the broad bean, Vicia faba, consists of a index ( M.I.) and cell cycle kinetics determined 1) from colchicine accumulation of cells in
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Roots of Vicia faba that had been treated with colchicine (0.05% aqueous solutions) had meristems containing diploid and polyploid cells. Lateral roots grew
Whole root systems of Vicia faba were treated with 0-025 Pe r cent colchicine for 3 h. Meristems of roots and developing primordia were examined imme-
Genome, 34: 1-5. This research reports a new technique for chromosome doubling of clover (Trifolium sp.) axillary meristems via in vitro colchicine application.
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The other possible reason is an asynchronous division of meristem cells, which causes their varying sensitivity to the polyploidizing action of colchicine.
level in the endopolyploid nuclei of Vicia faba root meristems produced though colchicine. Growing primary roots of Vicia faba, 2-3 cm in length, were treated
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Can be induced by chemicals (colchicine from. Colchicum autumnale) applied to meristematic tissue. • Young zygotes respond best; vegetative tissue
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ultrastructural level by analysing all the stages of cell division in the control and colchicine treated cells of root tip meristematic cells of Glycine max (L.) Merr.
root meristem cells which retain their reproductive integrity has been . cycle times (T) determined on the sixteenth day of irradiation by the colchicine technique.
Since microtubules compose the mitotic spindle, meristematic activity is arrested in the presence of colchicine. Halogenated derivatives of uracil are known to
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Three experiments were undertaken which were, Experiment 1: apical meristem dropping with colchicine solution # 1; Experiment 2: seed treatment with
The unusual membranes in the root meristem cells of Allium cepa after exposure to colchicine are arranged in a closed multilayered structure consisting of a pair
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The unusual membranes in the root meristem cells of Allium cepa after exposure to colchicine are arranged in a closed multilayered structure
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The root meristem of G. armourianum, L treatedwith 0.7% colchicine exhibited more tetraploid cells in 20 hrs treatment. The increase in the concentration of
Estimation of the duration of cell cycle during short steady-state growth, by the cell flow method using 0.025 % colchicine, confirmed this conclusion. Meristem
The detailed organisation of root meristems, which we consider here primarily from the into nuclear DNA (Figure 7.4b), and ploidy after colchicine treatment.
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Exposing the shoot apical meristem (SAM) is necessary in horticultural practices such as shoot tip culture, colchicine treatment, gene transfer, and so on.
apical meristems are situated in a notch or crease at the tip of each branch. .. colchicine-induced metaphase accumulation technique) but increased dramati
In a root system of Vicia fabn meristems occur these various meristems will be genetically iden- .. colchicine of meristems of roots of Vicia faba. Ann. Bot.
Cytotoxin-induced Apoptosis in Meristematic Cells of Maize Roots Cytotoxin agents dactinomycin» cycloheximide and colchicine induced apoptosis
Seedlings of different hybrid genotypes and meristems of two interspecific hybrids were cultivated in vivo and treated for 24 h with 0.05% colchicine. Chromose
The Quiescent Centre and Rates of Mitosis in the Root Meristem of Allium tritiated thymidine and by colchicine treatment to measure the time parameters of the
Stem and root meristems of germinated Zea mays, Raphanus sativa and bulbs of Allium cepa were used to study the effect of colchicine upon their embryonic
Colchicine: alkaloid extract from the autumn crocus which stopsspindle formation in mitosis. Usually applied to the apical meristem or roots of haploids
Primary root meristems of Pisum sativum with a mitotic cycle prolonged to combined with Feulgen microspectrophotometry, and the colchicine-induced
We have investigated the appearance and reorganization of tubulin-containing arrays induced by colchicine in the root meristem of wheat
meristems are located at the distal end of continuous cell files extending into the mature meristems in roots of Vicia faba following irradiation and colchicine.
(In the press.) 12. EVANS H. J., NEARY G. J. and TONKINSON S. M. (1957) The use of colchicine as an indicator of mitotic rate in broad bean root meristems. 07.
The pretreatment of meristematic tissue serves two purposes. Colchicine pretreatment prevents the formation of micotubuli and, thereby, arresting cells in
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to obtain the new genotypes with variants in size and/or color of flowers and leaves (7). The use of colchicine on shoot meristems has been the primary method
Keywords: Aloe vera, tetraploids, chromosomes, colchicine. M1V2 presented a individual diploid or tetraploid level in its radical meristems.
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The shoot apical meristem (SAM) produces stem and initiates leaves. Its structure is counts (e.g., Lyndon, 1968), colchicine treatment (e.g., Rolin- son, 1976)
FABA ROOT MERISTEMS BY N-HYDROXYURETHANE AND. RELATED were exposed to colchicine (0.030o ) for two 4 hour periods (16-20 hours and 20-24
The genome doubling agent colchicine has been used effectively to obtain tetraploid plants when starting with diploid material. Since the plant meristem consists
sence from short root meristems, which have a similar structural configuration, 0.5 Ci/ml or colchicine at a concentration of 0.05% for a period of 24 hours.
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Tetraploid plants are produced by treating the terminal buds of diploid plants with colchicine, causing the chromosome number of the meristematic cells inside to
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urban landscaping tree. Chromosome doubling was achieved by the application of colchicine to either pre-soaked seed or to the apical meristems of young
Cytogenetic damage induced by magnesium in wheat root meristems. The metaphase abnormalities were represented by fragmented metaphases, colchicine-
Early in the thirties, Levan (1938) showed that colchicine could cause spindle disturbances and polyploidy in Allium root meristem cells and later in 1945,
Treatment of meristematic explants with colchicine and caffeine as chemical mutagens and subsequent regeneration from callus cultures from 400 tested plants
Population Kinetics in Root Meristems of Pisum sativum. Radiat. Res. 64, 475- 484 .. Vicia faba following irradiation and colchicine. Chromosoma 12, 484-504
meristem cells of Allium cepa. quinoxalinyl)oxy]phenoxy] propionate) were evaluated in the root meristem cells .. LEVAN (1938) described colchicine mitosis
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Three chromosome doubled plants (approximately 10% of the surviving meristems) from treatments with 0.05% colchicine and 48 or 60 h duration of application
Cattleya/ or dendrobium culture media: 2nd stage growth, to speed production of x-plants to produce desired number of meristems. After production goals are
plants. In deciduous fruits various concentrations of colchicine in. 5% alcohol were applied to axillary buds. The penetration of the drug into the meristems of the
Abstract: In this study the tip of meristem in diploid plants (2n = 2x =28) were treated with a 0.2% colchicine solution and flowcytometry was used to determine the
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The genome doubling agent colchicine was used effectively to obtain tetraploid plants in dragonhead. Treatment of apical meristem of seedlings was carried out
polyploidization was to place cotton soaked with colchicine on the caulinary meristem. (between the two cotyledons) for 24 h, four days after germination. During
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from colchicine-treated meristems. Five of the 17 plants produced branches which bore flowers with doubled chromosome numbers. In this and in all other cases
Primary root growth occurs at the root apical meristem (RAM). In actively growing roots treated with colchicine, sectors of polyploid cells were transient
A relative comparison of sequential colchicine accumulations of mitotic RADIATION EFFECTS; VICIA; COLCHICINE; MERISTEMS; ROOTS;
Abstract: C-mitotic effects of colchicine and the insecticide Ambush 25EC ( permethrin) in pea root meristems were compared. The examined compounds were
meristematic cells was suppressed due to the retardation of metaphase progression .. dent formation of heterogeneous tubulin arrays induced by colchicine in
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Scholars Portal - A Differential Response to Colchicine of Meristems of Roots of Vicia faba.
Seeds and meristematic buds can be treated with colchicine, and the cells inside become polyploid with multiple sets of chromosomes (more than the diploid
Results also showed that treatment of the shoot meristem by colchicine allowed to obtain diploid (2n= 16) and mixoploid plants having
Meristems-11 WB01345_1.gif (616 bytes) Cell Wall synthesis occurs in the presence of Colchicine but the normal pattern is disrupted. Removal of Colchicine
COLCHICINE: Antimitotic alkaloid . At the time EXPLANT: Fragment of plant put in culture: cell, meristem, apex, tissue, embryo, floral pieces, organs, FUSION
The Arabidopsis root has a simple structure and the root meristem is an In actively growing roots treated with colchicine, sectors of polyploid
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MARIA KLEIN & LUCYNA SAMEK. Abstract: C-mitotic effects of colchicine and the insecticide Ambush 25EC (permethrin) in pea root meristems were compared .
Students can examine the effect of colchicine on meristematic cells by applying a solution to the apical meristem at the onset of flower bud formation. Using the
root meristems. Thus, the growth and mitotic behaviour of germinating colchicine- pretreated lettuce achenes were observed to be influenced significantly by the
(ii) 0.05% (w/v) colchicine (for most plant tissues). Can be Alternatively, flower buds, anthers, carpels or leaf or apical meristems can be used (Notes 2 and 3).
lines were developed by injecting colchicine into meristem of seedlings at true leaf emergence stage (Jaskani et al., 2004). Seed germination treatments: For
The effect of 5-aminouracil and low temperature in the presence of colchicine proved to be the most effective in respect to synchronization of the root meristem
THE ULTRASTRUCTURAL CHANGES INDUCED BY COLCHICINE IN ROOT MERISTEMATIC CELLS OF GLYCINE SOJA. Yang Maocheng, Cong Bin, Zhao
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Well separated somatic chromosomes were prepared from colchicine-treated root meristems, using an enzymatic digestion technique. Statistical analyses
Treatment of Pisum root meristems with nutrient solutions containing tritiated thymidine (H/sup 3/-T) and colchicine simultaneously labeled cells in two different
In the root meristem of Allium cepa, colchicine triggers the formation of long strands in the cortical cytoplasm of C-mitotic cells (Utrilla et al., 1989). In the present
surviving meristems) from treatments with 0.05% colchicine and 48 or 60 h duration of application were obtained. Chromosome doubling resulted in a marked
Colchicine solution (2-3 drops) was injected with 1 ml syringe in the meristem of seedlings at true leaf emergence stage twice daily for three
in cucumber root meristems were studied. (39%) was obtained 4 h after an 18 h APD block at 15 mM followed by 0.05% colchicine treatment for 2 h.
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If colchicine was added 4 hours before the peak of secondary roots were removed daily if meristems of secondary root meristems recovering from the effects
Chromosome doubled plant from haploid bud treated by 0.4% colchicine solution for 2 hrs and .. through five times of subculturing the shoot tip meristem. 2.
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Effect of Colchicine on the Utilization of Thymidine labelled with Tritium root meristems of seedlings of Vicia faba have produced evidence that colchicine
Abstract. The effects of 0.5% and 0.025% solutions of colchicine on the passage of cells through the mitotic cycle in apical meristems of primary roots of Vicia/
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Of the 3 colchicine levels applied, 0.05 and 0.10% of drug application of colchicine in culture medium are intermedia were obtained from meristem culture.
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They argue that excessive colchicine exposure adversely affects non- meristematic tissues, resulting in aberrant morphologies, reduced vigor, and increased
Somatic polyploidization is usually brought about by treating the apical meristem with colchicine. The success rate for conversions is rather low, although some
The effect of colchicine on the protocorm-like bodies of Cattleya intermedia L. of diploid (2n = 40) Cattleya intermedia were obtained from meristem culture.
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meristems are collapsing. The primordia that reveal this level of insensitivity o IAA are also relatively insensitive to colchicine. However, though their growth may
from the meristematic root tip cells of different test plants. .. Michard, S.A. and Beckert, M. (1997) 'Spontaneous versus colchicine-induced chromosome
meristem recovers from a colchicine treatment. The stimulation of root growth by concen- trations of IAA that are normally inhibitory leads us to conclude that one
during early initiation and organisation of apical meristems. Soon the . by the colchicine method of metaphase accumulation, ranged from 12-1 to 25-2 h, that
In this study the tip of meristem in diploid plants (2n = 2x =28) were treated with a 0.2% colchicine solution and flowcytometry was used to
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Methods of Colchicine Treatment •••••.•••••••••••••••••. 11. Treatment of Inflorescence: Cuttings, Young Shoots, and Apical Meristems of MatUl"e Plants ••. ••••••. ,13
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Meristems are responsible for the formation of the entire postembryonic plant body .. colchicine-treated parent roots, and the assumption that all cells undergo
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DNA content of colchicine-induced endopolyploid nuclei in vicia faba L. in colchicine induced polyploid root-tip meristem cells of three Vicia species. Nuclear
apical meristem in flowering plant morphogenesis, and then suggest an . be induced by colchicine), a considerable proportion of each leaf blade can be seen
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X-radiation of cells of the primary root meristem of Zea mays. By D. G. Fenner, M. Sc, ture on mitosis and on the action of colchicine in root meristem cells of
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A 30 min treatment with 3.76 :< 10-* 3I colchicine was used to produce a small tetraploid population in the diploid root meristems [17]. A 30 rain immersion in a
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Tritiated thymidine (3H-T) and colchicine were compared with respect to their use in measuring the mitotic cycle duration of root meristem cells of Pisum sativum.
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Abstract The ultrastructures of root meristematic cells changed when wheat roots were incubated in two kinds of concentrations of colchicine for different periods.
Action of Colchicine and Heavy Water on the Polymerization of Microtubules in Wheat Root Meristem. J. BURGESS and; D. H. NORTHCOTE. Department of
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Abstract. In whole root systems of Vicia faba, including primaries and laterals, the meristems do not respond in a uniform manner to treatment with colchicine.
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The ultrastructures of root meristematic cells changed when wheat roots were incubated in two kinds of concentrations of colchicine for different periods.
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Whole root systems of Vicia faba were treated with 0.025 per cent colchicine for 3 h. Meristems of roots and developing primordia were examined immediately
colchicine vary in different plant species and cell types. (Karagiannidou et al., 1995). In the root meristem of. Allium cepa, colchicine triggers the formation of long
Ser. V (Botany), 13 (1): 17-24, 1983. Colchicine-like effect of propyzamide on the root meristematic cells of Vicia faba L. Kazuo IZUMI*, Hajime KANAZAWA
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1 Nov 2010 by self-pollination and open-pollination of the triploid hybrid; and secondly, by application of colchicine to axillary meristems of triploid plants.
In plants the meristem tissue has numerous cells undergoing mitosis. . like colchicine, a molecule that binds to tubulin molecules and prevents the synthesis of
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2000) so it was possible to generate somatic polyploids through colchicine directly in the culture medium containing the meristems. MATERIAL AND METHODS
Viciafaba Root Meristems. Radiat. Res. 69, 530-540 (1977). A relative comparison of sequential colchicine accumulations of mitotic cells has been used to
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0.5% colchicine for 2 to 5 h, at ambient temperature; 0.5% colchi- . The root meristematic cells of E. heterophylla L. submitted to 0.5% colchicine and 0.0029
Different cytogenetic effects of colchicine were analysed in detail. A basic difference between the response of root meristems of isolated embryos and of intact
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Genotoxicity studies on the insecticide dursban in root meristem cells of Crepis capillaris L. Micronuclei induced by colchicine and gamma
involves the production of tetraploid cells by treating the meristems with colchicine for short periods of time whichvaried with different species. The number of
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We have investigated the appearance and reorganization of tubulin-containing arrays induced by colchicine in the root meristem of wheat Triticum aestivum,
Scholars Portal - The Response of Root Meristems to Colchicine and Indol-3yl- acetic acid in Vicia faba L.
Fern shoot, root, and leaf apical meristems had long been understood to DNA cytospectrophotometry, colchicine-induced metaphase accumulation, and
Chromosome doubling was achieved by the application of colchicine to either pre-soaked seed or to the apical meristems of young seedlings. Treatment of the
EVANS H. J., NEARY G. J. and TONmNSON S. M. (1957) The use of colchicine as an indicator of mitotic rate in broad bean root meristems. J. Genet.
Glycine soja roots were incubated in colchicine for 3 days after they had germinated for 4 days. Obvious ultrastructural changes in the cells of root meristem
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Representative images showing aberrant mitosis in root apical meristem cells C C-colchicine metaphase; D telophase with a bridge; E multipolar division;
It is estimated for barleythat only 54 per cent of the cells seen in a roottips squash are actually meristematic.(Z2)3.1.2 Short term colchicine accumulation.
Application of colchicine to meristems of glasshouse-grown plants was unsuccessful, but a combination of colchicine treatment and tissue culture regeneration
plant.Due to insynchronization of meristem, not all cells of colchicine treatments are polyploidy. Ovary was always thought as suitable induc-
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(The meristem is a critical location for introducing colchicine when attempting to convert a diploid daylily to a tetraploid. This method converts a mature plant,
ploidy with colchicine, because polyploid plants are usually larger, hardier, faster Root tip meristematic cells from planted branches were used as a source of
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The treatments were: 1) injection with water (control); 2) injection with 0.4% colchicine; 3) exposure of the meristem to 0.4% colchicine for 48 hours; 4) exposure
However, in grass species, the chromosome doubling effects of colchicine are inconsistent. In grass species, the shoot meristem is more intensely surrounded
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Fasciation or cristation is an abnormal development of an apical meristem characterized V, Polyploidizing Agents (colchicine, morphine, phenyl-urethane, etc).
meristematic cells of the root body. These observations suggest that cell wall pectins of meristematic maize root cells undergo .. colchicine at 10 3 M for 3 h.
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The colchicine treatment is more effective when the length of hypocotyls is between 4 - 8 mm. The root meristem of G. armourianum, L treated with 0.7%
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The Response of Root Meristems to Colchicine and Indol-3yl-acetic acid in Vicia faba L. (1973). MACLEOD, R. D.. Abstract. The effects of colchicine and IAA
The effect of boron on the mitotic index of Allium cepa root meristematic cells were investigated. .. The effect of colchicine on root mitosis in Allium. Hereditas
recognized by cytological study and flow cytometric analysis. Tip meristem treatment of seedlings. Following the colchicine treatment, the plants were classified
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PROPHASE AND METAPHASE IN MERISTEMS. JOSEPH G. OMARA, U. The effect is apparently identical with that produced by colchicine, which was tested
Contains details of Simultaneous action of phenylurethane and colchicine on the root meristems of A Cepa L.
The forming cell plate is oriented perpendicular to the meristem surface and Colchicine has been widely used to induce cytochimeras of fruiting plants (32).
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Two meristems are established in the embryo, one at the root tip and one at the tip of the . and are made by treatment with radiation or chemicals (colchicine).
correlation was found between proliferative activity in the meristem at the . 0.025% solution of colchicine 72-75h after the commencement of auxin treatment .
Meristems-4 WB01345_.gif (616 bytes) 311 Syllabus. Control of the Cell Division Block Cell Division with Colchicine (Causes Microtubule Depolarization)
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