A TAXONOMICAL, MORPHOLOGICAL AND CYTOLOGICAL REVISION OF THE GENUS FORMERLY TREATED AS NARDURUS REICHENB. (POEAE, POACEAE) IN IRAN

Document Type : Research Paper

Authors

1 Master of Science Student / Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran

2 Assistant Professor / Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran

3 Professor / Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran

Abstract

The taxonomic status of the two species previously treated as Nardurus subulatus (now Loliolum subulatum)and Nardurus maritimus (now Vulpia unilateralis) are reviewed and improved according to the latest classifications for these taxa. A critical study of 30 herbarium specimens and 490 plant individuals collected all around Iran were studied based on the morphological and cytological characters. Cytological analysis showed that 2n = 2x = 14 and all karyotype symmetry indices indicated symmetric karyotypes for both species with metacentric chromosomes. This is the first report on chromosome number of Loliolum subulatum. Two species were clearly separated by morphological data and a close relationship between both species and two species of Vulpia (V. persica and V. hirtiglomis), used as controls, was observed. Regarding high similarity between Loliolum subulatum and the species of Vulpia we propose to transfer this species to the genus Vulpia.

Keywords

Article Title [Persian]

مطالعه تاکسونومی، ریخت‌شناسی و سلولی جنس معرفی شده با نام قبلی Nardurus Reichenb. (Poeae, Poaceae) در ایران

Authors [Persian]

  • سمیه ذوقی 1
  • حجت‌الله سعیدی 2
  • محمد‌رضا رحیمی‌نژاد 3
1 دانشجوی کار‌شناسی ارشد / گروه زیست‌شناسی دانشگاه اصفهان
2 استادیار / گروه زیست‌شناسی دانشگاه اصفهان
3 استاد / گروه زیست‌شناسی دانشگاه اصفهان
Abstract [Persian]

موقعیت تاکسونومی دو گونه Nardurus subulatus و N. maritimus   (اکنون با نام جنس (Vulpia  بررسی و بر اساس آخرین طبقه‌بندی‌ها معین می‌گردد. این مطالعه بر روی تعداد 30 نمونه هرباریومی و 490 گیاه جمع‌آوری شده از سطح ایران بر اساس ویژگیهای ریخت‌شناسی و سلول‌شناسی انجام شده است. مطالعات سلول‌شناسی 2n=2x=14  را با کاریوتیپ متقارن و کروموزومهای متاسنتریک  برای هر دو گونه نشان داد. گزارش کروموزومهای گونه   Lolium subulatum  برای اولین بار است. مشاهدات نشان می‌دهد که دو گونه به آسانی از همدیگر تفکیک می‌شوند و از طرف دیگر شباهت گونه Loliolum subulatum با گونه‌های جنس Vulpia موجب پیشنهاد انتقال این گونه به جنس Vulpia  می‌گردد.

Keywords [Persian]

  • Cytology
  • Iran
  • Loliolum
  • Nardurus
  • Poeae
  • Taxonomy
  • Vulpia

References

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Stace, C. A. 1985: Vulpia C. C. Gmelin and Loloilum V. Krecz. & Bobrov in P. H. Davis  Flora of Turkey and the East Aegean Islands, vol. 9: 451-461. -Edinburgh University Press, Edinburgh.
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Stace, C.  A. 1978: Changing concepts of the genus Nardurus Reichenb. (Gramineae). Flora Europaeae. Notulae systematicae (ed. Heywood, V. H.). 20: 344- 350.
Stebbins, G. L. 1971: Chromosomal evolution, higher plants. -Edvard Arnold Publishers. London.
The Iranian Journal of Botany
Volume 17, Issue 2 - Serial Number 2
December 2011
Pages 189-199

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History

  • Receive Date: 22 February 2011
  • Revise Date: 06 October 2011
  • Accept Date: 16 November 2011

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