DETERMINATION OF BASIC CHROMOSOME-NUMBERS IN THE GENUS SACCHARUM BY PHYSICAL MAPPING OF RIBOSOMAL-RNA GENES

Authors
DHONT A ISON D ALIX K ROUX C GLASZMANN JC
Citation
A. Dhont et al., DETERMINATION OF BASIC CHROMOSOME-NUMBERS IN THE GENUS SACCHARUM BY PHYSICAL MAPPING OF RIBOSOMAL-RNA GENES, Genome, 41(2), 1998, pp. 221-225
Citations number
28
Categorie Soggetti
Biothechnology & Applied Migrobiology","Genetics & Heredity
Journal title
Genome → ACNP
ISSN journal
08312796
Volume
41
Issue
2
Year of publication
1998
Pages
221 - 225
Database
ISI
SICI code
0831-2796(1998)41:2<221:DOBCIT>2.0.ZU;2-0
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 e ach species and each rDNA family, the position and number of sires in the various cytotypes suggested the presence of one locus and basic ch romosome numbers of 10 for Saccharum officinarum and Saccharum robustu m and 8 for Saccharum spontaneum. The implications of these results fo r the genetic maps of modern cultivars derived from crosses between th e species S. officinarum and S. spontaneum are discussed.