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Cytogenetic characterization of the holocentric chromosomes in the aphids Myzus variansand Myzus cerasi
Cytogenetic characterization of the holocentric chromosomes in the aphids Myzus variansand Myzus cerasi
- Source :
- Caryologia; January 1999, Vol. 52 Issue: 1-2 p81-85, 5p
- Publication Year :
- 1999
-
Abstract
- AbstractCytogenetic investigations on the holocentric chromosomes of Myzus variansand Myzus cerasihave been carried out using silver staining and C-banding followed by chromomycin A3(CMA3) and DAPI staining in order to improve our knowledge of these pest crop species and facilitate their identification. In M. variansC-banding pattern is pecu-: liar of each chromosome pair thus allowing the identification of all homologues and the reconstruction of a reliable karyotype whereas in M. cerasi,C-positive regions result to be limited to both the telomeric regions of the X chromosomes. In both species, silver staining localizes rDNA genes on one telomere of each X chromosome; such telomeres are the unique brightly fluorescent C-positive regions after CMA3staining, whereas all other heterochro-matic bands result DAPI positive.
Details
- Language :
- English
- ISSN :
- 00087114 and 21655391
- Volume :
- 52
- Issue :
- 1-2
- Database :
- Supplemental Index
- Journal :
- Caryologia
- Publication Type :
- Periodical
- Accession number :
- ejs29184122
- Full Text :
- https://doi.org/10.1080/00087114.1998.10589157