Pollen Morphology of the Genus Seseli L. (Umbelliferae) in Turkey
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E. DOĞAN GÜNER, H. DUMAN, N. M. PINAR Turk J Bot 35 (2011) 175-182 © TÜBİTAK Research Article doi:10.3906/bot-0906-70 Pollen morphology of the genus Seseli L. (Umbelliferae) in Turkey Ebru DOĞAN GÜNER1,*, Hayri DUMAN2, Nur Münevver PINAR3 1Gazi University, Vocational High School of Health Services, 06830 Gölbaşı, Ankara - TURKEY 2Gazi University, Faculty of Science and Literature, Department of Biology, 06500 Teknikokullar, Ankara - TURKEY 3Ankara University, Faculty of Science, Department of Biology, 06100 Tandoğan, Ankara - TURKEY Received: 01.07.2009 Accepted: 19.09.2010 Abstract: Morphological features of pollen of 11 Turkish taxa belonging to the complex genus Seseli L. were examined using light and scanning electron microscopy. On the basis of exine sculpturing, 3 main types were recognised in Seseli: Type 1, rugulate at equator, psilate-perforate at pole; Type 2, striate-reticulate at equator, rugulate at pole; and Type 3, rugulate at equator, striate at pole. Th e study revealed that palynological characters display taxonomic signifi cance in the genus. Key words: Seseli, Umbelliferae, pollen, SEM Türkiye Seseli L. (Umbelliferae) cinsinin polen morfolojisi Özet: Sistematik açıdan karmaşık bir cins olan Seseli L. cinsinin Türkiye’de bulunan 11 taksonunun polen morfolojik özellikleri ışık ve taramalı elektron mikroskoplarında incelenmiştir. Seseli cinsinde ekzin ornamentasyon özelliklerinde üç tip fark edilmiştir (Tip 1: ekvatorda rugulat, kutupda psilat-perforat, Tip 2: ekvatorda striat-retikulat, kutupda rugulat, Tip 3: ekvatorda rugulat, kutupda striat). Bu çalışmada palinolojik karakterlerin cinsde taksonomik önem taşıdığı açıklanmıştır. Anahtar sözcükler: Seseli, Umbelliferae, polen, SEM Introduction Th e genus Seseli is represented by 11 species and 1 Th e genus Seseli L. (Umbelliferae) contains subspecies in the fl ora of Turkey (Hedge & Lamond, herbaceous plants distributed in the Irano- 1972; Davis et al., 1988; Duman, 2000; Özhatay et al., Turanian, Euro-Siberian, and East Mediterranean 2009). Libanotis transcaucasica Schischk. was given phytogeographic regions (Hedge & Lamond, 1972; as synonymous for Seseli libanotis (L.) W.Koch in the Davis et al., 1988). Th e total number of Seseli taxa fourth volume of Flora of Turkey (Hedge & Lamond, is about 125-140 in the world (Pimenov & Leonov, 1972). In discussion of the S. libanotis description, it 2004). had been stated that specimens from Van and Hakkari * E-mail: [email protected] 175 Pollen morphology of the genus Seseli L. (Umbelliferae) in Turkey provinces were seen to be Libanotis transcaucasica. Material and methods However, L. transcaucasica was named Seseli Th e material was collected from wild populations. transcaucasica by Pimenov and Sdobnina (1975). Th e collectors and localities are provided below in Th is species exists in Turkey, but is not given in Flora “Specimens examined” for each taxon. Th e specimens of Turkey. A comprehensive revision of the Turkish were deposited in the herbarium of Gazi University. genus Seseli was fi nished recently by E. Doğan Güner and H. Duman in Turkey. As Pimenov and Sdobnina’s Pollen slides were prepared using the technique work has been accepted, it was added to the list at of Wodehouse (1935). LM studies were conducted the end of the revision study. However, 2 species, S. with a Prior microscope. Measurements were based grandivittatum (Sommier & Levier) Schischk. and on 20 or more pollen grains per specimen. For SEM S. foliosum (Sommier & Levier) Manden., could not studies, pollen grains and seeds were coated with be found by the authors in Turkey. As a result of the gold for 4 min in a sputter coater. Morphological revision study, the number of species was determined observations were made with a JEOL JSM-6060 LV electron microscope. as 10 species and 1 subspecies. Th e study revealed that 37% of the 11 taxa are endemic to Turkey. Th e pollen terminology was adopted from Faegri and Iversen (1975), Punt (1984), and Punt et al. Th e genus has economic importance in Turkey, (2007), and the shape classifi cation followed that of and also throughout the world. Dried base leaves Erdtman (1969), based on the P/E ratio in the Table. are used in animal feed. Th e plant is also used Th e Simpson and Roe graphical test (Van Der Pluym for ornamental purposes in gardens and parks & Hideux, 1997) was used for statistical calculations. throughout Europe. As in all Umbelliferae genera, the chemicals found in Seseli are used for medicinal Specimens examined: Th e order of the species purposes (Amanturdiyev, 1989; Hu et al., 1990; was adapted from Hedge and Lamond (1972): –Seseli Meena et al., 1989). libanotis (L.) W.Koch; A9 Ardahan: E.Doğan 1622. –S. transcaucasica (Schischk.) Pimenov & Sdobnina; Umbelliferae pollen characters have been B9 Van: M.Armağan 1867. –S. petraeum M.Bieb.; A7 mentioned by several authors in general pollen keys Gümüşhane: E.Doğan 1644. –S. gummiferum Pall. (Erdtman, 1963; Faegri & Iversen, 1975; Moore & ex Sm. subsp. gummiferum; A4 Ankara: E.Doğan Webb, 1978; Punt, 1984; Perveen & Qiser, 2006). 1583. –S. gummiferum subsp. corymbosum (Boiss. Cerceau-Larrival (1962, 1972, & 1982) divided & Heldr.) Davis; C3 Antalya: E.Doğan 1584. –S. pollen into 5 groups by phylogeny. She studied resinosum Freyn & Sint.; A4 Bartın: E.Doğan 1607. Seseli libanotis, S. montanum L., S. hippomarathrum –S. peucedanoides (M.Bieb.) Koso-Pol.; A9 Kars: Jacq., S. gracile Waldst. et Kit., and S. tortuosum L. M.Vural 8283 & et al. –S. tortuosum L.; A4 Ankara: Meanwhile, Van Zeith et al. (1977) described the E.Doğan 1652. –S. campestre Besser; A2 İstanbul: following pollen types from Iran: Anisosciadium, E.Doğan 1656. –S. andronakii Woron.; A8 Erzurum: Bunium, Eryngium, Ferula, Malabaila, Pimpinella, E.Doğan 1615. –S. hartvigii Parolly & Nordt; C3 Sium erectum, and Turgenia types. Th ey mentioned S. Antalya: E.Doğan 1585. libanotis pollen as being Pimpinella-type. Punt (1984) divided family Umbelliferae into 50 pollen types and studied the pollen morphologies of Seseli annuum L., Results S. hippomarathrum, S. libanotis, and S. montanum by Size, symmetry and shape using light microscopy (LM) and scanning electron Th e pollen grains are radially symmetrical and microscopy (SEM). isopolar. Th e shape is prolate and perprolate (shape Th e aim of this current study was to illustrate the classifi cation follows Erdtman, 1969), with polar range of variability in pollen characters of the Seseli axes of 20.3-25.2 μm and equatorial axes of 10.5- species found in Turkey in order to establish their 12.4 μm (Table, Figure 1). Th e outline is elliptic in availability for future taxonomic work. the equatorial optical section and triangular in the 176 Table. Palynological observations and measurements of the Seseli taxa (in μm). Exine thickness: Ornamentation, Ornamentation, Taxa P E P/E ratio, shape Int. Clg Clt Plg Plt ExE, ExK, ExZ equatorial area polar area S. libanotis 24.1 ± 1.46 12.2 ± 0.96 1.98, prolate 1.0 ± 0.20, 1.0 ± 0.15, 0.8 ± 0.16 0.4 ± 0.04 Rugulate Psilate-perforate 14.8 ± 1.64 1.1 ± 0.32 3.9 ± 0.81 5.2 ± 0.80 Rugulate S. transcaucasica 21.6 ± 1.18 11.5 ± 0.86 1.88, prolate 0.9 ± 0.06, 0.8 ± 0.08, 0.8 ± 0.10 0.4 ± 0.00 Striate- reticulate 13.1 ± 1.01 0.9 ± 0.11 2.9 ± 0.74 3.8 ± 0.81 S. petraeum 25.0 ± 0.99 11.5 ± 0.55 2.17, perprolate 1.0 ± 0.17, 0.9 ± 0.06, 0.8 ± 0.11 0.4 ± 0.00 Rugulate Psilate-perforate 14.1 ± 0.86 0.9 ± 0.13 4.8 ± 0.51 5.9 ± 0.54 S. gummiferum subsp. 25.2 ± 1.06 10.8 ± 0.49 2.33, perprolate 0.9 ± 0.04, 0.9 ± 0.05, 0.7 ± 0.07 0.4 ± 0.00 Rugulate Psilate-perforate 14.1 ± 1.04 0.9 ± 0.19 4.1 ± 0.55 5.1 ± 0.46 gummiferum S. gummiferum subsp. 24.4 ± 0.97 10.8 ± 0.62 2.26, perprolate 0.9 ± 0.18, 1.0 ± 0.17, 1.0 ± 0.21 0.5 ± 0.08 Rugulate Striate 12.3 ± 1.11 0.7 ± 0.17 4.4 ± 0.54 5.3 ± 0.64 corymbosum S. resinosum 23.2 ± 0.85 11.4 ± 0.45 2.04, perprolate 0.9 ± 0.11, 0.8 ± 0.06, 0.8 ± 0.06 0.4 ± 0.00 Rugulate Striate 13.1 ± 1.05 0.9 ± 0.16 4.0 ± 0.61 5.2 ± 0.52 S. peucedanoides 24.2 ± 1.48 12.4 ± 1.06 1.95, prolate 0.9 ± 0.13, 0.9 ± 0.05, 0.8 ± 0.10 0.5 ± 0.12 Rugulate Striate 15.1 ± 1.23 0.9 ± 0.18 4.0 ± 0.72 4.9 ± 0.65 E. DOĞAN N.M.PINAR GÜNER, H.DUMAN, S. tortuosum 22.7 ± 0.60 11.7 ± 0.59 1.94, prolate 0.9 ± 0.07, 0.9 ± 0.06, 0.7 ± 0.09 0.4 ± 0.00 Rugulate Psilate-perforate 13.9 ± 0.90 1.1 ± 0.19 3.1 ± 0.48 4.6 ± 0.43 S. campestre 21.3 ± 1.01 11.6 ± 0.61 1.84, prolate 0.9 ± 0.07, 0.9 ± 0.05, 0.8 ± 0.14 0.4 ± 0.04 Rugulate Striate 14.1 ± 1.13 0.9 ± 0.28 3.1 ± 0.63 4.2 ± 0.44 Striate S. andronakii 20.8 ± 0.68 10.6 ± 0.45 1.96, prolate 1.0 ± 0.12, 0.9 ± 0.07, 0.7 ± 0.07 0.5 ± 0.10 Rugulate- granulate 12.1 ± 0.87 0.7 ± 0.13 3.2 ± 0.61 4.3 ± 0.55 Striate S. hartvigii 20.3 ± 0.81 10.5 ± 0.63 1.93, prolate 0.9 ± 0.08, 0.9 ± 0.05, 0.8 ± 0.10 0.5 ± 0.08 Rugulate- granulate 13.6 ± 0.97 1.0 ± 0.13 3.1 ± 0.74 4.2 ± 0.85 177 Pollen morphology of the genus Seseli L.