Anatomical properties of four Pilosella Vaill. (Asteraceae) taxa from Eastern Black Sea Region of Turkey

Abstract

Anatomical features of four Pilosella Vaill. taxa (P. officinarum Vaill., P. piloselloides (Vill.) Sojak subsp. bauhini (Schult.) S. Bräut. & Greuter, P.× hypeurya (Peter) Sojak, P. densiflora (Tausch) Sojak) collected from Black Sea Region of Turkey were investigated. Anatomical studies include transverse sections of root, stem and leaf with their illustrations. Although the anatomical properties are similar to the typical anatomy of dicotyledons, some differences were observed among them. While root anatomy of P. officinarum, P. piloselloides subsp. bauhini and P. densiflora consist of a single layer exodermis,  there is  2-3 layer exodermis  in the  natural hybrid P. × hypeurya.  Additionaly the root pith of this hybrid taxa completely composed of schlerenchyma cells in contrast to other investigated taxa. The stem anatomy of the investigated taxa is similar to each other except the number of the tracheidal elements. The numbers of the stomata per µm²  disticltly differ in P. piloselloides subsp. bauhini from the rest examined taxa.

Keywords

• Anatomy,Leaf,Pilosella,Root,Stem

Türkiye’nin Doğu Karadeniz Bölgesin’den dört Pilosella Vaill. (Asteraceae) taksonun anatomik özellikleri

Abstract

Anatomical features of 4 Pilosella Vaill. species (P. officinarum Vaill., P. piloselloides (Vill.) Sojak, P. hypeurya (Peter) Sojak, P. densiflora (Tausch) Sojak) collected from Black Sea Region of Turkey were investigated. Anatomical studies include transverse sections of root, stem and leaf with their illustrations. Although the anatomical properties are similar to the typical anatomy of dicotyledons, some differences were observed among them. While root anatomy of P. officinarum, P. piloselloides and P. densiflora consist of a single layer exodermis,  it consist of 2-3 layer  in P. hypeurya  Additionaly the root pith of P. hypeurya is completely composed of schleranchymatic cells in contrast to other investigated species. The stem anatomy of the investigated species is similar to each other except the number of the tracheidal elements. The numbers of the stomata per µm²  disticltly differ in P. piloselloides,from the rest examined species.

Keywords

• Anatomi,Gövde,Kök,Pilosella,Yaprak

References

1. Algan G (1981). Bitkisel Dokular için Mikroteknik. Fırat Universitesi Fen Fakültesi Yayınları Bot. No:1, Istanbul, pp. 48-49
2. Bishop GF, Davy AJ (1994) Hieracium pilosella L. (Pilosella officinarum F. Schultz & Scultz-Bip.). Journal of Ecology 82: 195-210
3. Chapman HM, Parh D, Oraguzıe N (2000) Genetic structure and colonising success of a clonal weedy species, Pilosella officinarum (Asteraceae). Heredity 84: 401-409
4. Davis PH (1972) Flora of Turkey and the East Aegean Islands. Edinburgh Univ. Press, Edinburgh, VolumeV, pp. 747-763
5. Coşkunçelebi K (2012) Pilosella Vaill. In: Güner, A. (ed.), A checklist of the Flora of Turkey (Vascular Plants). Nezahat Gökyiğit Botanik Bahçesi ve Flora Araştırmaları Derneği yayını, İstanbul, pp. 187-192.Gadella, T. W. J. 1987. Sexual tetraploid and apomictic pentaploid populations of Hieracium pilosella (Compositae). Plant Systematics and Evolution, 157, 219-245
6. Grieve MA (1995) A Modern Herbal. Electric Newt, Newyork.
7. Jenkins TA, Jong K (1997) Significance of polyploid variation in New Zealand Pilosella and Hieracium (Asteraceae). Bot. J. Scotland 49: 75-87
8. Metcalfe CR, Chalk I (1972) Anatomy of the Dicotyledons. Oxford Univ. Press, London, 2: 782-804

9. Sell PD (1987) An introduction to the study of the British Hieracia, 1. History and Classification. Watsonia 16: 365-371
10. Sell PD, West C (1974) Materials for a Flora of Turkey XXX. Hieracium. Notes from the Royal Botanic Garden Edinburgh 33: 241-248
11. Sepet H (2017) Endemik Pilosella hoppeana subsp. lydia (Bornm.& Zahn) Sell & West (Asteraceae) taksonu üzerine morfolojik, anatomik ve karyolojik bir çalışma. Artvin Çoruh Üniversitesi Orman Fakültesi Dergisi 18 (2): 168-175
12. William GL, Craw D, Johnstone RD (1987) Arsenic concentrations in Hieracium pilosella (Compositae). Plant Syst. Evol. 157: 219-245
13. Zahn KH (1921-1923) Compositae – Hieracium, Abteilung II ( sect. XL Pilosellina – sect. XLVIII Prealtina). Das Pflazenreich, Regni Vegetabilis Cospectus Vol. IV (ed. A. Engler). H. R. Engelmann, Leipzig.