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  1. Article

    Open Access

    Linkage 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...

    A. Farré, I. Lacasa Benito, L. Cistué, J. H. de Jong… in Theoretical and Applied Genetics (2011)

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  2. 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...

    F Vavre, J H de Jong, R Stouthamer in Heredity (2004)

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  3. 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 ...

    S A Kamstra, J H de Jong, E Jacobsen, M S Ramanna, A G J Kuipers in Heredity (2004)

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  4. No Access

    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...

    K.-B. Lim, M. S. Ramanna, J. H. de Jong, E. Jacobsen… in Theoretical and Applied Genetics (2001)

  5. No Access

    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 ...

    N. Ohmido, K. Kijima, Y. Akiyama, J. H. de Jong… in Molecular and General Genetics MGG (2000)

  6. No Access

    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 (...

    X.-B. Zhong, J. Bodeau, P. F. Fransz, V. M. Williamson… in Theoretical and Applied Genetics (1999)

  7. 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...

    E Jacobsen, J H de Jong, S A Kamstra, P M M M van den Berg, M S Ramanna in Heredity (1995)

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  8. No Access

    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...

    F. W. J. Havekes, J. H. de Jong, C. Heyting, M. S. Ramanna in Chromosome Research (1994)

  9. No Access

    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...

    W. Heijbroek, A. J. Roelands, J. H. de Jong, C. van Hulst, A. H. L. Schoone… in Euphytica (1988)

  10. No Access

    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...

    J. L. Oud, P. Kakes, J. H. De Jong in Theoretical and Applied Genetics (1987)

  11. No Access

    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...

    W. Heijbroek, A. J. Roelands, J. H. De Jong in Euphytica (1983)

  12. No Access

    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...

    J. H. De Jong, P. V. Lobbes, H. R. Bolland in Genetica (1981)

  13. No Access

    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...

    A. J. J. Dietrich, J. H. de Jong, R. J. P. Mulder in Genetica (1981)

  14. No Access

    Article

    Location and behaviour of constitutive heterochromatin during meiotic prophase in Beta vulgaris L.

    J. H. De Jong, J. L. Oud in Genetica (1980)

  15. No Access

    Article

    Use of haploids of Beta vulgaris L. for the study of orcein and giemsa stained chromosomes

    Some haploids isolated among the progeny from crosses involving several genotypically different motherplants of Beta vulgaris L., were used for an investigation on chromosome morphology of the genus Beta.

    J. H. De Jong, T. S. M. De Bock in Euphytica (1978)

  16. No Access

    Article

    The use of primary trisomics for the localization of genes on the seven different chromosomes ofPetunia hybrida. I. Triplo V

    Data on 3n×2n and 2n×3n crosses as a source of trisomics inPetunia are given. The delayed germination and retarded growth ofPetunia trisomics, in comparison with diploids, is mentioned.

    F. J. Smith, J. H. de Jong, J. L. Oud in Genetica (1975)

  17. No Access

    Article

    A standard karyogram of Petunia hybrida hort

    An improved technique, viz., maceration with cellulase and pectinase, was applied in order to obtain chromosome preparations of botanical material suitable for fluorescence microscopy. The application of this met...

    F. J. Smith, J. L. Oud, J. H. De Jong in Genetica (1973)