| Pak. J. Bot., 41(6): 2863-2867, 2009. | Back to Contents | ||||
|
|
Updated: 16-01-10 | ||||
PATTERNS OF HETEROCHROMATIN DISTRIBUTION IN HORDEUM DEPRESSUM (SCHRIBN. & SMITH) RYD., CHROMOSOMES
BUSHREEN JAHAN AND AHSAN A. VAHIDY
Abstract: The N-band pattern of heterochromatin distribution in tetraploid Hordeum depressum chromosomes was studied to identify general patterns or preferential sites for heterochromatin. An ideogram was developed for the description of individual N-bands. The karyotype of H. depressum had 9 metacentrics, 3 submetacentrics and 2 SAT chromosome pairs with small spherical and elongated satellites. Giemsa N-banding patterns of H. depressum showed 6 bands per chromosome on an average. Mean number of bands indicated that it possessed 0.32 centromeric, 0.5 intercalary and 0.18 telomeric bands.
Department of Botany, Federal Urdu University of Arts Sci. & Technology, Gulshan-e-Iqbal Campus, Karachi-75300, Pakistan and Department of Genetics, University of Karachi, Karachi-75270, Pakistan E-mail: drbushreenjahan@yahoo.com |
|||||
|
|
|||||
| Back to Contents |
|
Back to Contents | |||
|
|
|||||