Melahat OZCAN - Academia.edu (original) (raw)

Papers by Melahat OZCAN

Pakistan Journal of Botany, 2014

Bangladesh Journal of Plant Taxonomy, Dec 22, 2013

Euonymus L. belongs to the subtribe Euonyminae Benth. & Hook., tribe Euonymeae DC., and subfamily... more Euonymus L. belongs to the subtribe Euonyminae Benth. & Hook., tribe Euonymeae DC., and subfamily Euonymoideae (DC.) Arn. of the family Celastraceae (Prokhanov, 1974). The genus includes deciduous and evergreen species from low growing shrubs, self-clinging climbers to tall shrubs and small trees. There are approximately 130-200 species of the genus distributed in tropical, subtropical and temperate regions of North and Central America, Europe, Asia and Australia (Blakelock, 1951). During field work in Artvin province, some interesting specimens belonging to Euonymus were collected. The specimens were crosschecked with keys provided by Boissier (1879), Coode

Biological Diversity and Conservation, 2020

In this study, morphologic-micromorphologic, wood, and leaf characteristics of R. depressa, a rar... more In this study, morphologic-micromorphologic, wood, and leaf characteristics of R. depressa, a rare species and known only from the type locality, were described for the first time and evaluated comparatively with R. microcarpa. The morphological and anatomical characteristics such as petiole length and leaf sizes, and numbers of bud scale, seed, and leaf veins, ray characteristics in wood, amphistomatic stomata, horseshoes vascular bundle in the petiole, one vascular bundle or two vascular bundles with sclerenchymatous cells in the phloem part, as well as micromorphological characteristics can be used in differentiating R. depressa and R. microcarpa. Especially, stomatal characteristic (amphistomatic) is significantly important and can be used to differentiate these two closely related species.

Turkish Journal of Biodiversity, Mar 31, 2020

ABSTRACT In this study, general morphological characteristics, the leaf and wood anatomical char... more ABSTRACT
In this study, general morphological characteristics, the leaf and wood anatomical characteristics and, leaf micromorphological features of Rhamnus microcarpa, which is native in Artvin were investigated in detail. Leaves broadly ovate, 3.0-5.5 x 1.9-3.9 cm; stipules 4-7 mm; pinnately 7-10 veined; petiol 615 mm. Bud scales dark brown transverse band at the base. Wood was semi-ring porous to ring porous, rays heterocellular, fibers thick-walled especially in latewood. In leaves, dorsiventral mesophyll, hypostomatic type stomata and simple unicellular trichomes observed. Also, epicuticle scales in the lower leaf surface observed.

ÖZ
Bu çalışmada, Artvin’de doğal olarak yayılış gösteren Rhamnus microcarpa’nın genel morfolojik özellikleri, yaprak ve odun anatomik özellikleri ve yaprak mikromorfolojik özellikleri detaylı olarak incelenmiştir. Yapraklar geniş yumurtamsı, 3.0-5.5 x 1.9-3.9 cm; stipüller 4-7 mm; damar sayısı 7-10; yaprak sapı 6-15 mm’dir. Tomurcuk pullarının tabanında koyu kahverengi enine şeritler bulunur. Odun yarı halkalı veya halkalı traheli, özışınları heteroselüler, özellikle yaz odununda lifler kalın çeperlidir. Yapraklarda dorsiventral mezofil, hipostomatik tip stoma ve basit üniselüler tüyler tespit edildi. Ayrıca, yaprak alt yüzeylerinde epikütikular pullar gözlendi.

In the present study, morphology and comparative leaf anatomies of Euonymus leiophloeus Stev., re... more In the present study, morphology and comparative leaf anatomies of Euonymus leiophloeus Stev., recently reported as a new record for the flora of Turkey, Euonymus latifolius(L.) Mill. subsp. latifolius, and E.
latifolius (L.) Mill. subsp. cauconis Coode & Cullen are evaluated. In morphologically, two species resemble each other, but E. leiophloeus differs by longer and erect linear wings (10 -15 mm long), smaller capsules (4-5 mm long) and flowers (4-merous). For this examination, several Euonymus specimens were examined in morphologically and six Euonymus accessions from distinct populations are investigated in anatomically. Dorsiventral (=bifacial) type leaf, hypostomatic stomata (only exist on abaxial epidermis), and cyclocytic stomata cells are observed in all examined accessions here. Detailed measurements were performed in accessions. Populations differ in mainly the shape of midrib vascular bundle, accesssory bundles, and upper and lower epidermal cell shape in surface view.

Stem and leaf anatomy of Origanum rotundifolium Boiss., O. vulgare L. ssp. viride (Boiss.) Hayek,... more Stem and leaf anatomy of Origanum rotundifolium Boiss., O. vulgare L. ssp. viride (Boiss.) Hayek, Teucrium hircanum L., belonging to Lamiaceae were characterized and compared. Some important differences were determined in the taxa. In addition, trichome diversity was investigated by light microscopy and three main types of trichomes (peltate, capitate glandular and non-glandular) were observed in three taxa.

Pakistan Journal of Botany, 2014

Bangladesh Journal of Plant Taxonomy, Dec 22, 2013

Euonymus L. belongs to the subtribe Euonyminae Benth. & Hook., tribe Euonymeae DC., and subfamily... more Euonymus L. belongs to the subtribe Euonyminae Benth. & Hook., tribe Euonymeae DC., and subfamily Euonymoideae (DC.) Arn. of the family Celastraceae (Prokhanov, 1974). The genus includes deciduous and evergreen species from low growing shrubs, self-clinging climbers to tall shrubs and small trees. There are approximately 130-200 species of the genus distributed in tropical, subtropical and temperate regions of North and Central America, Europe, Asia and Australia (Blakelock, 1951). During field work in Artvin province, some interesting specimens belonging to Euonymus were collected. The specimens were crosschecked with keys provided by Boissier (1879), Coode

Biological Diversity and Conservation, 2020

In this study, morphologic-micromorphologic, wood, and leaf characteristics of R. depressa, a rar... more In this study, morphologic-micromorphologic, wood, and leaf characteristics of R. depressa, a rare species and known only from the type locality, were described for the first time and evaluated comparatively with R. microcarpa. The morphological and anatomical characteristics such as petiole length and leaf sizes, and numbers of bud scale, seed, and leaf veins, ray characteristics in wood, amphistomatic stomata, horseshoes vascular bundle in the petiole, one vascular bundle or two vascular bundles with sclerenchymatous cells in the phloem part, as well as micromorphological characteristics can be used in differentiating R. depressa and R. microcarpa. Especially, stomatal characteristic (amphistomatic) is significantly important and can be used to differentiate these two closely related species.

Turkish Journal of Biodiversity, Mar 31, 2020

ABSTRACT In this study, general morphological characteristics, the leaf and wood anatomical char... more ABSTRACT
In this study, general morphological characteristics, the leaf and wood anatomical characteristics and, leaf micromorphological features of Rhamnus microcarpa, which is native in Artvin were investigated in detail. Leaves broadly ovate, 3.0-5.5 x 1.9-3.9 cm; stipules 4-7 mm; pinnately 7-10 veined; petiol 615 mm. Bud scales dark brown transverse band at the base. Wood was semi-ring porous to ring porous, rays heterocellular, fibers thick-walled especially in latewood. In leaves, dorsiventral mesophyll, hypostomatic type stomata and simple unicellular trichomes observed. Also, epicuticle scales in the lower leaf surface observed.

ÖZ
Bu çalışmada, Artvin’de doğal olarak yayılış gösteren Rhamnus microcarpa’nın genel morfolojik özellikleri, yaprak ve odun anatomik özellikleri ve yaprak mikromorfolojik özellikleri detaylı olarak incelenmiştir. Yapraklar geniş yumurtamsı, 3.0-5.5 x 1.9-3.9 cm; stipüller 4-7 mm; damar sayısı 7-10; yaprak sapı 6-15 mm’dir. Tomurcuk pullarının tabanında koyu kahverengi enine şeritler bulunur. Odun yarı halkalı veya halkalı traheli, özışınları heteroselüler, özellikle yaz odununda lifler kalın çeperlidir. Yapraklarda dorsiventral mezofil, hipostomatik tip stoma ve basit üniselüler tüyler tespit edildi. Ayrıca, yaprak alt yüzeylerinde epikütikular pullar gözlendi.

In the present study, morphology and comparative leaf anatomies of Euonymus leiophloeus Stev., re... more In the present study, morphology and comparative leaf anatomies of Euonymus leiophloeus Stev., recently reported as a new record for the flora of Turkey, Euonymus latifolius(L.) Mill. subsp. latifolius, and E.
latifolius (L.) Mill. subsp. cauconis Coode & Cullen are evaluated. In morphologically, two species resemble each other, but E. leiophloeus differs by longer and erect linear wings (10 -15 mm long), smaller capsules (4-5 mm long) and flowers (4-merous). For this examination, several Euonymus specimens were examined in morphologically and six Euonymus accessions from distinct populations are investigated in anatomically. Dorsiventral (=bifacial) type leaf, hypostomatic stomata (only exist on abaxial epidermis), and cyclocytic stomata cells are observed in all examined accessions here. Detailed measurements were performed in accessions. Populations differ in mainly the shape of midrib vascular bundle, accesssory bundles, and upper and lower epidermal cell shape in surface view.

Stem and leaf anatomy of Origanum rotundifolium Boiss., O. vulgare L. ssp. viride (Boiss.) Hayek,... more Stem and leaf anatomy of Origanum rotundifolium Boiss., O. vulgare L. ssp. viride (Boiss.) Hayek, Teucrium hircanum L., belonging to Lamiaceae were characterized and compared. Some important differences were determined in the taxa. In addition, trichome diversity was investigated by light microscopy and three main types of trichomes (peltate, capitate glandular and non-glandular) were observed in three taxa.