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Article
Numerical study of the effect of head and eye movement on progression of retinal detachment
Rhegmatogenous retinal detachment (RD) is a sight threatening condition. In this type of RD a break in the retina allows retrohyaloid fluid to enter the subretinal space. The prognosis concerning the patients’...
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Article
Open AccessA multidimensional network approach reveals microRNAs as determinants of the mesenchymal colorectal cancer subtype
Colorectal cancer (CRC) is a heterogeneous disease posing a challenge for accurate classification and treatment of this malignancy. There is no common genetic molecular feature that would allow for the identif...
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Article
Open AccessLinkage map construction involving a reciprocal translocation
This paper is concerned with a novel statistical–genetic approach for the construction of linkage maps in populations obtained from reciprocal translocation heterozygotes of barley (Hordeum vulgare L.). Using sta...
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Article
Cytogenetic mechanism and genetic consequences of thelytoky in the wasp Trichogramma cacoeciae
In Hymenoptera, complete parthenogenesis, that is thelytoky, is a common phenomenon where virgin females produce only daughters. Thelytoky is often induced by bacteria of the genus Wolbachia, but can also be gene...
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Article
Meiotic behaviour of individual chromosomes in allotriploid Alstroemeria hybrids
Chromosome association and chiasma formation were studied in pollen mother cells at metaphase I of four allotriplod BC1 plants (2n=3x=24) obtained from the backcross of the hybrid Alstroemeria aurea × A. inodora ...
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Article
Indeterminate meiotic restitution (IMR): a novel type of meiotic nuclear restitution mechanism detected in interspecific lily hybrids by GISH
A detailed analysis of microsporogenesis was carried out in three diploid lily cultivars (2n=2x=24) and three diploid interspecific hybrids (2n=2x=24) using DNA in situ hybridisation methods (GISH and FISH). In c...
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Article
Quantification of total genomic DNA and selected repetitive sequences reveals concurrent changes in different DNA families in indica and japonica rice
This paper describes a fluorescence in situ hybridization (FISH) analysis of three different repetitive sequence families, which were mapped to mitotic metaphase chromosomes and extended DNA fibers (EDFs) of ...
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High resolution FISH reveals the molecular and chromosomal organisation of repetitive sequences of individual tomato chromosomes
High-resolution fluorescencein situhybridisation (FISH) to pachytene complements and extended DNA fibres, along with pulse field gel electrophoresis, were used to study the chromosomal distribution and molecular ...
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Article
FISH to meiotic pachytene chromosomes of tomato locates the root-knot nematode resistance gene Mi-1 and the acid phosphatase gene Aps-1 near the junction of euchromatin and pericentromeric heterochromatin of chromosome arms 6S and 6L, respectively
The root-knot nematode resistance gene Mi-1 in tomato has long been thought to be located in the pericentromeric heterochromatin region of the long arm of chromosome 6 because of its very tight genetic linkage (...
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Vaccination Strategies to Induce T-Cell Immunity Against Tumours
Effector T cells recognize immunogenic peptides that are presented on the cell membrane in the context of major histocompatibility complex (MHC) molecules. The vast majority of T cells consists of either CD8+ ...
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Article
Variation and geographical distribution of ploidy levels inPennisetum sectionBrevivalvula (Poaceae) in Burkina Faso, Benin and southern Niger
Pennisetum sect.Brevivalvula is a species complex characterized by polyploidy and apomixis. Ploidy level was assessed by DAPI-flow cytometry for 304 plants of the section, originating from Burkina Faso, Benin an...
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Article
Genomic in situ hybridization (GISH) and RFLP analysis for the identification of alien chromosomes in the backcross progeny of potato (+) tomato fusion hybrids
Backcross progenies, BC1 and BC2, derived from crossing a hexaploid potato (+) tomato fusion hybrid to tetraploid potato, were monitored for the presence of alien tomato chromosomes. For discriminating the tom...
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Article
Synapsis and chiasma formation in four meiotic mutants of tomato (Lycopersicon esculentum)
Synapsis and chiasma formation were studied in pollen mother cells of four meiotic mutants of tomato. The four mutants displayed defects in the assembly of the synaptonemal complex (SC) covering the whole rang...
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Article
Chromosome banding patterns in Lettuce species (Lactuca sect.Lactuca, Compositae)
Chromosome banding patterns obtained with C- and N- banding, and AgNO3 staining were studied in somatic metaphase complements of fourLactuca species.L. sativa andL. serriola have almost identical chromosome morph...
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Article
Synaptonemal complex pairing and metaphase I association in a telo-substituted telotrisomic of rye (Secale cereale L.)
The synaptonemal complexes in pollen mother cells (PMCs) of rye in which one chromosome 1R was replaced by the two corresponding telocentrics, and where one additional telocentric 1RS was present, showed appro...
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Article
Sugar beets homozygous for resistance to beet cyst nematode (Heterodera schachtii Schm.), developed from monosomic additions of Beta procumbens to B. vulgaris
Monosomic additions of Beta vulgaris x B. procumbens with resistance to beet cyst nematode (Heterodera schachtii Schm.) were used for the production of resistant diploids through incorporation of the B. procumben...
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Article
Computerized analysis of chromosomal parameters in karyotype studies
A study is presented of the possibilities and limitations of semi-automated karyotype analysis on the basis of chromosome length and centromere index. A number of computer programs have been developed for 1) q...
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Article
Transfer of resistance to beet cyst nematode from Beta patellaris to sugar beet
The chromosome bearing the gene(s) for resistance to the beet cyst nematode (Heterodera schachtii Schm.), could be transferred from Beta patellaris to B. vulgaris by interspecific hybridization and repeated backc...
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Article
Karyotypes and sex determination in two species of laelapid mites (Acari: Gamasida)
The chromosome number and morphology of two species of the family Laelapidae have been determined: Hypoaspis aculeifer Canestrini, 1887 has 9(♂) and 18(♀) chromosomes and Cosmolaelaps miles Berlese, 1914 7(♂) and...
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Article
Location and variation of the constitutive heterochromatin in Petunia hybrida
The location of heterochromatin in the chromosomes of Petunia hybrida (2n=14) is presented. C-banded mitotic metaphase chromosomes and carmine-stained pachytene bivalents have been studied. It is shown that the h...
