Results 21 to 30 of about 4,725 (176)

100 Years of Chromosome Research in Rye, Secale L.

open access: yesPlants, 2022
Although microscopy and genetics were still in their infancy, there are cytological results produced a hundred years ago that are still relevant today. Since the 1920s, rye has been a subject of chromosome research. It started by plotting its mitotic and
Rolf Schlegel
doaj   +1 more source

Addressing a weakness of anticancer therapy with mitosis inhibitors: Mitotic slippage

open access: yesMolecular & Cellular Oncology, 2017
Mitosis inhibitors, which include antimicrotubule drugs, are chemotherapy agents that induce the arrest and apoptosis of mitotic cells. Mitotic slippage, in which mitotically arrested cells exit mitosis, limits the effectiveness of mitosis inhibitors. We
Riju S. Balachandran, Edward T. Kipreos
doaj   +1 more source

Asymmetric clustering of centrosomes defines the early evolution of tetraploid cells

open access: yeseLife, 2020
Tetraploidy has long been of interest to both cell and cancer biologists, partly because of its documented role in tumorigenesis. A common model proposes that the extra centrosomes that are typically acquired during tetraploidization are responsible for ...
Nicolaas C Baudoin   +5 more
doaj   +1 more source

Comparative cytogenetics of anembryonic pregnancies and missed abortions in human

open access: yesВавиловский журнал генетики и селекции, 2023
Miscarriage is an important problem in human reproduction, affecting 10–15 % of clinically recognized pregnancies. The cases of embryonic death can be divided into missed abortion (MA), for which the ultrasound sign of the embryo death is the absence of ...
T. V. Nikitina   +5 more
doaj   +1 more source

Tetraploidy and CIN: a dangerous combination [PDF]

open access: yesCell Cycle, 2015
Chromosomal instability (CIN) is a hallmark of cancer, and is associated with both poor prognosis and drug resistance.1 Tetraploidy has also been frequently observed in human cancer despite being a...
Sally, Dewhurst, Charles, Swanton
openaire   +2 more sources

Morphological changes in colchicine--treated Pelargonium × hortorum L.H. Bailey greenhouse plants

open access: yesHorticultural Science, 2010
Polyploids were effectively pre-selected in colchicine-treated plants of the desirable brown-leaved cultivar Black Velvet Scarlet F1 of the species Pelargonium × hortorum L.H.
P. Jadrná, O. Plavcová, F. Kobza
doaj   +1 more source

Induction to tetraploidy in Pacific oysters (Crassostrea gigas)

open access: yesActa Scientiarum: Animal Sciences, 2022
As an alternative to the use of cytochalasin B (CB), 6-dimethylamino-purine (6-DMAP) and thermal shock (heat shock by increasing the temperature from 25 to 36ºC) could be used to induce tetraploidy in Pacific oyster (Crassostrea gigas) diploids ...
Emílio Mateus Costa Melo   +3 more
doaj   +1 more source

Reversible Tetraploidy as an Evolutionary Mechanism [PDF]

open access: yesEvolution, 1971
Polyploidization is reversible. Randolph and Fischer (1939) obtained diploid offspring from autotetraploid maize. Several fertile haploids have also been obtained from successful tetraploid and octaploid species (Kimber and Riley, 1963; de Wet and Harlan, 1970), and Raven and Thompson (1964) pointed out that there is no experimental basis or ...
openaire   +2 more sources

Artificial induction of tetraploidy in Humulus lupulus L. using oryzalin

open access: yesActa Agrobotanica, 2019
The aim of the research was to establish an efficient procedure for in vitro micropropagation in order to obtain numbers of identical plants for in vitro polyploidization of Humulus lupulus (2n = 20), using antimicrotubule agent oryzalin.
Michaela Švécarová   +3 more
doaj   +1 more source

Cultivar‐Specific Production of Unreduced Pollen in the Ornamental Bigleaf Hydrangea (Hydrangea macrophylla ssp. macrophylla)

open access: yesPlant Breeding, EarlyView.
ABSTRACT Unreduced gametes naturally promote polyploidization and are valuable in breeding polyploid offspring. Bigleaf hydrangea (Hydrangea macrophylla ssp. macrophylla), a major ornamental crop, has shown spontaneous polyploidization rates ranging from 0% to 94% in previous crosses.
Conny Tränkner, Anke Müller
wiley   +1 more source

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