Results 41 to 50 of about 1,163,263 (310)

Problematic octaploid forms and a new chromosome number in the genus Achillea L., 2n = 126

Acta Societatis Botanicorum Poloniae, 2014
Among the offspring of a problematic form of Achillea sp., a 2n = 126 seedling which probably arose as the result of fusion of unreduced octo- and hexaploid gametes (72 + 54) was found along with seedlings having an octaploid chromosome number (2n = 72).
Janina Dąbrowska
doaj   +1 more source

Cytogenetic study and pollen viability of three populations of Diplotaxis harra (Brassicaceae) in Iran [PDF]

Journal of Cell and Molecular Research, 2014
In this study, we examined the chromosome number, detailed male meiosis, microsporogenesis, pollen fertility and distribution of cytotypes of Diplotaxis harra (Forssk.) Boiss. This is the first cytogenetic report of the taxon.
Massoud Ranjbar, Somayeh Karami
doaj   +1 more source

Cytomolecular identification of individual wheat-wheat chromosome arm associations in wheat-rye hybrids [PDF]

, 2013
Chromosome pairing in the meiotic metaphase I of wheatrye hybrids has been characterized by sequential genomic and fluorescent in situ hybridization allowing not only the discrimination of wheat and rye chromosomes, but also the identification of the
Badaeva ED, Badaeva ED, Bass HW, Bedbrook J, Berkman PJ, Cifuentes M, Cifuentes M, Cifuentes M, Colas I, Conley EJ, Contento A, Cuadrado A, Devos KM, Devos KM, Fedak G, Fernandez-Kalvin B, Ferrer E, Fominaya A, Gale MD, Gerlach WL, Gill BS, Hernandez P, Huang S, I. Molnár, Jauhar PP, Kamstra SA, Le HT, Logojan A, Lukaszewski AJ, M. Megyeri, M. Molnár-Láng, Martinez-Perez E, Martinez-Perez E, Miller TE, Molnár I, Molnár I, Molnár I, Molnár I, Molnár-Láng M, Molnár-Láng M, Mukai Y, Munkvold JD, Nagaki K, Naranjo T, Naranjo T, Naranjo T, Prieto P, Qi L, Riley R, Riley R, Sabot F, Schwarzacher T, Sepsi A, Sharp PJ, Szakács, Sánchez-Morán E, Tischner T   +56 more
core   +1 more source

Karyotypes of six previously unstudied European mealybugs (Homoptera: Pseudococcidae)

Comparative Cytogenetics, 2010
Phenacoccus peruvianus Granada de Willink, 2007, Ph. prope avenae Borchsenius, 1949, Ph. hordei (Lindeman, 1886), Вalanococcus boratynskii Williams, 1962, Trionymus  radicum (Newstead, 1895), Rhizoecus halophilus (Hardy, 1868) were studied ...
Ilya Gavrilov-Zimin, I Trapeznikova
doaj   +1 more source

Cytogenetic study of two Solenanthus Ledeb. species (Boraginaceae) in Iran [PDF]

Journal of Cell and Molecular Research, 2013
Chromosome number, meiotic behavior, and pollen viability were analyzed in 2 species of genus Solenanthus, S. stamineus (Desf.) Wettst. and S. circinnatus Ledeb, from Iran. This report is the first cytogenetic analysis of these species.
Massoud Ranjbar, Maryam Almasi, Elnaz Hosseini   +2 more
doaj   +1 more source

Citogenética de Piper hispidinervum e Piper aduncum Cytogenetics of Piper hispidinervum and Piper aduncum

Pesquisa Agropecuária Brasileira, 2007
O objetivo deste trabalho foi detectar diferenças entre duas espécies de pimenta-longa por meio de análise de cariótipos. Foram analisados cinco acessos de Piper hispidinervum (Piperaceae) C. DC. e Piper aduncum L.
Juliane Dornellas Nunes, Giovana Augusta Torres, Lisete Chamma Davide, Caio Césio Salgado   +3 more
doaj   +1 more source

Cytogenetic study and pollen viability of four populations of Trigonella [PDF]

Journal of Cell and Molecular Research, 2011
In the present paper, the cytogenetic study including meiotic chromosome number and behavior along with pollen viability were performed in 4 populations of Trigonella spruneriana Boiss. This is the first cytogenetic report of the taxon.
Masood Ranjbar, Zahra Hajmoradi, Roya Karamian   +2 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Rapid interphase and metaphase assessment of specific chromosomal changes in neuroectodermal tumor cells by in situ hybridization with chemically modified DNA probes [PDF]

, 1988
Repeated DNAs from the constitutive heterochromatin of human chromosomes 1 and 18 were used as probes in nonradioactive in situ hybridization experiments to define specific numerical and structural chromosome aberrations in three human glioma cell lines ...
A.H.N. Hopman, Atkin, Bigner, Brigati, Burns, Burns, Carine, Cavenee, Comings, Cooke, Cooke, Cremer, D. Tesin, Dale, Devilee, Devilee, Dudin, Durnam, Gosden, Hadlaczky, Hall, Henn, Higgins, Hopman, Hopman, Hopman, Hopman, Hopman, Joseph, Julien, Kinzler, Kohl, L. Manuelidis, Landegent, Landegent, Langer-Safer, Leary, Lund Jorgensen, Maniatis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, Manuelidis, McDermid, Müller, Müncke, Pinkel, Pinkel, Rappold, Schardin, Schwab, Shapiro, Siegel, T. Cremer, Therman, Trask, Willard, Wu, Yang   +64 more
core   +1 more source