scholarly journals Prunus laurocerasus L. Türü Bazı Yaprak Mikromorfolojik Karakterlerinin Yetişme Ortamına Göre Değişimi

Author(s):  
Nurcan Yiğit ◽  
Mehmet Çetin ◽  
Hakan Şevik

In this study, it was aimed to identify the change in some micromorphological characters in Prunus laurocerasus L. leaves obtained from 6 different provinces located in the areas where different climate types are dominant, depending on their habitat. In this regard, the leaf samples were collected from Prunus laurocerasus L. individuals in the provinces of Rize, Samsun located in the areas including the European-Siberian, Irano-Turanian and Mediterranean phytogeographical regions. The leaf epidermis images were obtained with the help of SEM on the collected leaf samples, and the required measurement procedures were performed on these images with the help of “Image J” measurement program. By measurements performed on the leaf epidermis surface, Stoma Length (µm), Stoma Width (µm), Pore length (µm), Pore width (µm) and Stoma Density (in an area of 1 mm2) measured such as micromorphological characters. The data obtained were subjected to the Variance analysis and Duncan’s test, and the change in these characters depending on their habitat was statistically evaluated. At the end of the study, it was determined that there were statistically significant differences at the confidence level of minimum 95% among the conditions of the habitat in terms of all characters except for the stomatal width.

Phytotaxa ◽  
2017 ◽  
Vol 299 (1) ◽  
pp. 111
Author(s):  
YUGUANG LIU ◽  
WEIJIAN LI ◽  
MING TANG ◽  
GUANGYAO YANG ◽  
WENGEN ZHANG

In the present study, we employed a classical taxonomic analysis of micromorphological characters of the leaf epidermis to reassess the taxonomy of four Gelidocalamus taxa, a genus of woody bamboos endemic to China. We propose that G. subsolidus is distinct from G. tessellatus, and G. albopubescens should be placed in synonymy under G. subsolidus. A formal taxonomic treatment is presented, including description, comments, illustrations, a distribution map, and SEM images of the abaxial leaf epidermis.


2017 ◽  
Vol 7 (3) ◽  
pp. 197-207 ◽  
Author(s):  
Alin Liana ◽  
Purnomo Purnomo ◽  
Issirep Sumardi ◽  
Budi Daryono

PhytoKeys ◽  
2021 ◽  
Vol 185 ◽  
pp. 65-86
Author(s):  
Nikolay A. Vislobokov ◽  
Long-Fei Fu ◽  
Yi-Gang Wei ◽  
Maxim S. Nuraliev

Micromorphological characters of leaf epidermis were investigated in 69 species of Aspidistra using scanning electron microscopy. Sculpture of epidermis varies from smooth to verrucose and rugose in the genus. The abaxial epidermis of some species bears papillae, whereas the adaxial surface uniformly lacks the papillae. Sculpture type of epidermis and density of papillae are generally found to be stable characters at a species level. The infraspecific variation of epidermis sculpture, where present, ranges from smooth to verrucose or from verrucose to rugose. Micromorphological characters of leaf epidermis are shown to have potential taxonomic significance in Aspidistra; in combination with the type of shoot structure, they allow to subdivide the species into 13 groups. The groups are largely incongruent with floral morphological traits. An identification key to the studied species of Aspidistra based on vegetative characters (gross leaf and shoot morphology and characters of leaf epidermis) is presented.


Author(s):  
Hemalatha K ◽  
Abirami P

Objective: The present study was undertaken to establish the micromorphological characters of Talinum portulacifolium (Forssk.) Asch. ex Schweinf. belonging to the family Portulacaceae.Methods: The fresh plant parts were selected for micromorphological studies, and the air-dried plant powder was used for powder analysis as per the standard techniques [1-3].Results: Results revealed the presence of diagnostic characters like calcium oxalate crystals in the parenchyma cells of the leaf, which are druses with spiny surface that occurs in ordinary parenchyma cells. Stomata are paracytic which are present in both adaxial and abaxial surfaces of the leaf. The powder contains fragments of leaf epidermis, densely distributed stomata in laminar portions of the leaf.Conclusion: The present study provides the valuable information and also acts as pharmacognostical standards to standardize the study plant scientifically.


Author(s):  
Akeem B Kadiri ◽  
Alexandra N Muellner-Riehl

Abstract Putranjivaceae are a pantropically distributed but poorly known glucosinulate-producing family of three genera (Drypetes, Putranjiva and Sibangea), previously included in Euphorbiaceae subfamily Phyllanthoideae. Characters of the leaf epidermis were previously suggested as being of infrafamilial taxonomic relevance, but epidermal features of the three genera have not so far been compared in the light of the phylogenetic relationships recovered by molecular data. Therefore, we compared the leaf micromorphology of 44 (out of c. 200) Drypetes spp. and two (out of three) Putranjiva spp. using light microscopy. Our findings revealed that there are more stomata types than previously reported in both genera. We also present a new record of stomatal complexes and epidermal cell characteristics. The cell wall ornamentation character on both surfaces of the epidermis is useful for distinguishing D. aframensis subsp. aframensis. Based on a combination of the studied characters, doubtful species of Drypetes and Putranjiva are recognizable as belonging to the two genera, and this will require taxonomic and nomenclatural adjustments. Other taxonomically useful characters are trichome distribution and types and leaf areole shape and tertiary veins branching patterns that appear to be relatively constant across the two genera. Oil droplets located within the cell lumen in Putranjiva differentiates it from Drypetes, where they inwardly streak the epidermal walls among other features. Thus, our study provides evidence that the investigated leaf micromorphological characters are useful for distinguishing the species of the two genera, and they corroborate the existing infrageneric classification of Drypetes that was based on exomorphology.


Phytotaxa ◽  
2018 ◽  
Vol 356 (3) ◽  
pp. 215 ◽  
Author(s):  
TANG-JIE NIE ◽  
WEI-JIAN LI ◽  
XUE-NAN JI ◽  
YU-GUANG LIU ◽  
ZU-YAO LI ◽  
...  

In the present study, a classical taxonomic analysis of micromorphological characters of the leaf epidermis was employed to reassess the taxonomy of Gelidocalamus stellatus and its infraspecific taxa from southern China. We propose that G. monophyllus is distinct from G. stellatus, and G. wugongshanensis should be treated as a variety under G. stellatus. The variety, i.e. G. stellatus var. mangshanensis, collected from the Mangshan of Hunan Province in China, is re-described and illustrated. A formal taxonomic treatment is presented, including descriptions, comments, illustrations, distribution maps, and SEM images of the abaxial leaf epidermis.


Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
M Lazić ◽  
I Stanisavljević ◽  
D Veličković ◽  
S Stojičević ◽  
V Veljković

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