Cytological heterozygosity and the hybrid origin of sweet orange [Citrus sinensis (L.) Osbeck]

@article{Pedrosa2000CytologicalHA,
  title={Cytological heterozygosity and the hybrid origin of sweet orange [Citrus sinensis (L.) Osbeck]},
  author={Andrea Pedrosa and Dieter Schweizer and Marcelo Guerra},
  journal={Theoretical and Applied Genetics},
  year={2000},
  volume={100},
  pages={361-367}
}
Abstract Citrus sinensis chromosomes, although small in size, present a remarkable differentiation of bands with the fluorochromes CMA and DAPI. These bands suggest that some heteromorphisms are fixed in this species. To investigate the extension of these heteromorphisms, ten cultivars of C. sinenesis were analysed with CMA/DAPI staining and, in some of them, the 18S–5.8S–25S rRNA and 5S rRNA genes were located by in situ hybridization. CMA/DAPI staining showed exactly the same CMA+/DAPI… CONTINUE READING

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