CHROMOSOMAL STUDIES ON FOUR IRANIAN CROUS SPECIES (IRIDACEAE)

Document Type : Research Paper

Authors

1 Department of Biology, Faculty of sciences, University of Tehran

2 Department of Biochemistry, Faculty of Medicine, Medical Sciences University of Tehran

3 Institute of Biochemistry and Biophysics, University of Tehran

Abstract

Four species of Iranian Crocus were chromosomally investigated and their karyotypes were determined: C. sativus (2n=24), C. cancellatus subsp. damascenus (2n=8A), C. gilanicus (2n=24) and C. speciosus subsp. speciosus (2n=12).
On the meiotic studies of pollen mother cells in Crocus sativus unbalanced distribution of chromosomes in two poles of cells and chromosomic lagging were frequently observed. Karyological studies on the meristematic cells of neoformed root tips in explant of saffron corm showd cells with 2n=16 chromosomes.
 

Keywords


Article Title [Persian]

مطالعات کروموزومی چهار گونه زعفران

Authors [Persian]

  • حسن ابراهیم زاده 1
  • عذرا صبورا 1
  • محمدرضا نوری دلوئی 2
  • سید محمود غفاری 3
1 گروه زیست شناسی، دانشکده علوم، دانشگاه تهران
2 گروه بیوشیمی، دانشکده داروسازی، دانشگاه علوم دارویی تهران
3 موسسه بیوشیمی و بیوفیزیک دانشگاه تهران
Abstract [Persian]

چهار گونه زعفران ایران از نظر کروموزومی مورد بررسی قرار گرفت و کاریوتایپ آنها تعیین شد. 2n در این
گونه‌ها برابر با 24 در زعفران مزروعی  ( Corcus sativus) ،  در زعفران مشبک زیر گونه دمشق( 8A (Crocus cancellatus subsp. damascenes،  در زعفران گیلان 24 (Crocus gilanicus)    و 12 در زعفران زیبا زیر گونه زیبا، (Crocus speciosus subsp. speciosus )  بود.
در بررسی تقسیم میوز سلولها مادر دانه‌گرده در زعفران مزروعی، توزیع نامتعادل کروموزوم‌ها در قطبین سلول و تاخیر کروموزومی به فراوانی مشاهده شد. بررسی کاریولوژیکی ریشه‌های نو پدید در قطعه جدا کشت بنه‌های زعفران مزروعی وجود سلولهای با 2n=16 را نشان داد.

Keywords [Persian]

  • No keywords
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