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Chromosome Numbers and Karyotypes of Four Species Rubus L. from North of Iran | ||
| Journal of Genetic Resources | ||
| مقاله 9، دوره 5، شماره 1، خرداد 2019، صفحه 59-64 اصل مقاله (287.17 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22080/jgr.2019.16121.1129 | ||
| نویسندگان | ||
| Razieh Kasalkheh1؛ Eisa Jorjani* 1؛ Hossein Sabouri2؛ Meisam Habibi1؛ Ali Sattarian3 | ||
| 1Department of Biology, Faculty of Science, Gonbad Kavous University, Gonbad Kavous, Iran | ||
| 2Department of Plant Production, Faculty of Agriculture Science and Natural Resource, Gonbad Kavous University, Gonbad Kavous, Iran | ||
| 3Department of Forestry, Faculty of Agriculture Science and Natural Resource, Gonbad Kavous University, Gonbad Kavous, Iran | ||
| تاریخ دریافت: 19 اسفند 1397، تاریخ بازنگری: 14 مرداد 1398، تاریخ پذیرش: 03 اردیبهشت 1398 | ||
| چکیده | ||
| Karyotype study was performed across 7 populations of 4 Rubus species growing in Iran. The results showed that the chromosome numbers of R. sanctus (2n=2x=14) diploid, R. caesius, and R. discolor were (2n=4x=28) tetraploids, R. persicus (2n=8x=56) octoploid. The chromosome numbers of R. discolor, and R. persicus were reported here for the first time. Karyotypic formula also varied between the studied species, 5m+sm+t (Joybar population) & 6m+t (Babolsar population) in R. sanctus, 5m+2t in R. caesius & R. discolor, 4m+3t in R. persicus. In addition, the four studied species showed intrachromosomal (A1; range = 0.38-0.58), and inter-chromosomal (A2; range = 0.10-0.14) asymmetry and they were segregated into 3A (R. sanctus), 3B (R. caesius), 2C (R. discolor) and 3C (R. persicus) karyotypic symmetry classes. Total form percentage and the asymmetry indices, suggesting changes in the chromosome structure of Rubus species, occurred during their diversification. The chromosome number ranged from 2x to 8x in the studied species; it also confirmed that polyploidy within this genus cytogenetic phenomenon caused this variability in this genus. | ||
| کلیدواژه‌ها | ||
| Rubus؛ Karyotype؛ Chromosome؛ Polyploidy | ||
| مراجع | ||
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