Determination of basic chromosome numbers in the genusSaccharumby physical mapping of ribosomal RNA genes
- 1 April 1998
- journal article
- Published by Canadian Science Publishing in Genome
- Vol. 41 (2) , 221-225
- https://doi.org/10.1139/g98-023
Abstract
18S-5.6S-25S and 5S ribosomal DNA (rDNA) sites were located by in situ hybridization to the three main species of the Saccharum genus. For each species and each rDNA family, the position and number of sites in the various cytotypes suggested the presence of one locus and basic chromosome numbers of 10 for Saccharum officinarum and Saccharum robustum and\i 8 forSaccharum spontaneum. The implications of these results for the genetic maps of modern cultivars derived from crosses between the species S. officinarum and S. spontaneum are discussed.Key words: sugarcane, Saccharum, 18S-5.6S-25S rRNA, 5S rRNA, basic chromosome number, in situ hybridization.Keywords
This publication has 16 references indexed in Scilit:
- Comparative genetic mapping between duplicated segments on maize chromosomes 3 and 8 and homoeologous regions in sorghum and sugarcaneTheoretical and Applied Genetics, 1996
- Characterisation of the double genome structure of modern sugarcane cultivars (Molecular Genetics and Genomics, 1996
- Fluorescent in situ hybridization of a bacterial artificial chromosomeGenome, 1995
- Saccharum spontaneum L. ‘SES 208’ genetic linkage map combining RFLP- and PCR-based markersMolecular Breeding, 1995
- Physical mapping of 5S rDNA loci by direct-cloned biotinylated probes in barley chromosomesGenome, 1994
- Physical localization of active and inactive rRNA gene loci in Hordeum marinum spp. gussoneanum (4x) by in situ hybridizationGenome, 1992
- Cytogenetic analyses of sugarcane relatives (Andropogoneae: Saccharinae)Euphytica, 1991
- Cytogenetics of modern sugar canesEconomic Botany, 1963
- Problems in breeding and cytology of sugar caneEuphytica, 1961
- Studies in Saccharum spontaneum Distribution and Geographical Association of Chromosome NumbersCYTOLOGIA, 1960