Adil GÜNER, Vehbi ESER - optima

Posters
ANATOMIC AND MORPHOLOGICAL STUDY ON OROBANCHE
SIDEANA (OROBANCHACEAE), AN ENDEMIC SPECIES OF TURKEY
114
Golshan ZARE 1 , Candan AYKURT 2 , Ali A. DÖNMEZ 3
1 Hacettepe University, Faculty of Science, Departrment of Biology, Ankara, Turkey, g_zare@hacettepe.edu.tr
2 Akdeniz University, Faculty of Science-Letters, Departrment of Biology, Antalya, Turkey;
candan@akdeniz.edu.tr
3 Hacettepe University, Faculty of Science, Departrment of Biology, Ankara, Turkey; donmez@hacettepe.edu.tr
Orobanche is the largest genus among the holoparasitic members of Orobanchaceae. This
genus is mainly distributed through subtropical and temperate regions of the northern
hemisphere, and the Mediterranean region is one of the most important centers of diversity for
this group. Orobanche sidena was firstly described by Gilli in 1971 and known as an endemic
species from Mediterranean region of Turkey. This taxon is found in a restricted area in Side
(Antalya) and it is allied to O. hadroantha, but they have some different morphological
characters and their distribution area is completely different. O. hadroantha is an endemic
species that is found in a limited area in Ankara, center of Turkey, belonging to the Irano-
Turanian region. A comprehensive study has been carried out in this species in respect of
morphology, anatomy, pollen and seeds. A distribution map of this species is also given. This
taxon differs from the other species with its habitat, dense spike, short bracts and flower form
characterized by small size of flower and apiculate lobs of lower lip in corolla. O. sideana is
not an agricultural pest and it parasitizes Polygonum.
Keywords: Endemic, Orobanche, Mediterranean, Taxonomy, Turkey
SEED MORPHOLOGY OF SOME TURKISH MENTHA L.
(LAMIACEAE) TAXA.
Gül TARIMCILAR 1 , Ruziye DA�KIN 1 , Özer YILMAZ 1 , Gönül KAYNAK 1
1) Uluda� Universitesi, Fen-Edebiyat Fakültesi, Biyoloji Bölümü, 16059 Görükle, Bursa gult@uludag.edu.tr;
ruziyeg@uludag.edu.tr; ozery@uludag.edu.tr; gkaynak@uludag.edu.tr .
The seed morphology of 11 Mentha L. taxa (M. pulegium, M. aquatica, M. x piperita, M. x
dumetorum, M. spicata subsp. spicata, M. spicata subsp. tomentosa, M. x villosa-nervata, M.
longifolia subsp. longifolia, M. longifolia subsp. typhoides, M. x rotundifolia, and M.
suaveolens) which are belong to section Pulegium and section Mentha, was investigated by
Scanning Electron Microscopy (SEM). For each taxon, detailed description and photos taken
in their habitats were given. For seed morphology and size parameters, approximately 20
nutlets obtained from their wild populations were measured. Seed size ranged from 0. 59 to 1.
00 mm in length and from 0. 44 to 0. 80 mm in width. The smallest nutlet was found in M. x
villosa-nervata and the biggest nutlet was found and in M. aquatica. The shape of studied
seed varied from broadly obovate to ovate, only in M. pulegium was observed as oval. Seed
color varied from pale brown or chestnut to dark brown. Moreover, short or long trichomes
were observed on the surface of mericarps of M. aquatica, M. x dumetorum, M. spicata ssp.
tomentosa, M. longifolia ssp. longifolia. Seed surface sculpturing exhibits three types:
rugulate-foveate, rugulate-foveolate and reticulate-foveate. In conclusion, it can be said that
some seed characteristics (i.e. size, shape, hairness, sculpturing pattern) may be taxonomically
useful in the genus Mentha.
Keywords: Seed morphology, Mentha, Lamiaceae, SEM, Turkey
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