ArticleMolecular biology reports2019
Characterization of aneuploidy in interspecific hybrid between Urochloa ruziziensis (R. Germ. & Evrard) Crins and Urochloa decumbens (Stapf) R. D. Webster.
Article in Molecular biology reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 7 citations in OpenAlex.
- Article
- An Overview of the Genetics and Genomics of theFrontiers in plant science · 2021Review
- Comparative meiosis and cytogenomic analysis in euploid and aneuploid hybrids of Urochloa P. Beauv.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2019Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of the study was to characterize the type of aneuploidy present in the hybrid Urochloa ruziziensis × Urochloa decumbens and to confirm the origin of the additional chromosomes through comparative analysis of the hybrid and parental karyotypes. C and CMA banding techniques were used for chromosome differentiation. The parental genotypes showed 36 chromosomes. The hybrid presented plants with 36 + 2 chromosomes and plants with 36 + 1 chromosomes. Urochloa ruziziensis (4x) presented four chromosomes with CMA and C bands co-located in the terminal position. In U. decumbens, four chromosomes presented terminal CMA bands, eight chromosomes were distinguished by C banding with pericentromeric and terminal bands, one chromosome with terminal band at both ends and one chromosome presented one C terminal band. For the hybrid, CMA bands were found on five chromosomes and C bands on seven chromosomes, all in terminal position. Aneuploidy was identified in pairs 3' and 4' in the hybrid plants with 36 + 2 chromosomes, characterizing it as double trisomy. The karyotype of hybrid plants with 36 + 1 chromosomes indicated elimination of the additional chromosome identified in pair 4' and maintenance of trisomy on pair 3'. The comparative analysis of karyotypes indicates that the additional chromosomes that characterize the trisomy were inherited from U. ruziziensis (artificial tetraploid).
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