The Systematic Significance of Seed Morphology in Sagina (Caryophyllaceae) Under Scanning Electron Microscopy

Brittonia ◽  
1979 ◽  
Vol 31 (1) ◽  
pp. 52 ◽  
Author(s):  
Garrett E. Crow
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Morphology ◽  
Systematic Significance ◽  
Scanning Electron

scholarly journals Petal and Sepal Epidermal Micromorphology of Six Lathyrus Taxa (Fabaceae) and their Systematic Value

2012 ◽  
Vol 40 (1) ◽  
pp. 35 ◽  
Author(s):  
Hüseyin CILDIR ◽  
Ahmet KAHRAMAN ◽  
Musa DOGAN
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Glandular Trichomes ◽  
Systematic Significance ◽  
Trichome Types ◽  
First Time ◽  
Scanning Electron

In this study, the epidermal types and their distribution on dorsal and lateral petals, the trichome types and their density on sepals of Lathyrus chloranthus, L. digitatus, L. laxiflorus subsp. laxiflorus, L. roseus subsp. roseus, L. sativus, and L. tuberosus, belonging to sections Lathyrus, Lathyrostylis, Pratensis, and Orobon of the genus Lathyrus in Turkey were investigated using light microscopy (LM) and scanning electron microscopy (SEM), and the systematic significance of these characters was evaluated. These taxa, except L. sativus, are studied for the first time under aspects of the petal and sepal micromorphology. Three major epidermal types were recognized on the petal: tabular rugose striate cells (TRS), areolate cells with more or less striations (AS), and papillose conical striate cells (PCS). TRS and AS were further subdivided into three subtypes. TRS was found on the dorsal and lateral petals of L. chloranthus, L. sativus, and L. tuberosus: the dorsal petals of L. roseus subsp. roseus and the lateral petals of L. laxiflorus subsp. laxiflorus, while AS was present on the dorsal and lateral petals of L. digitatus and the lateral petals of L. roseus subsp. roseus. PCS was found only on the dorsal petals of L. digitatus. Three main types of trichomes on the sepal were observed: peltate glandular, capitate glandular, and nonglandular trichomes. The capitate glandular and nonglandular trichomes were further subdivided into three subtypes. The peltate glandular trichomes were present only in L. chloranthus, but absent in the others. The capitate glandular trichomes were found in L. chloranthus, L. laxiflorus subsp. laxiflorus, L. roseus subsp. roseus, and L. tuberosus. The nonglandular trichomes were always present in L. chloranthus and L. laxiflorus subsp. laxiflorus. The present results show that the petal and sepal micromorphology can be used in delimitation of the taxa based on petal and sepal micromorphology.

scholarly journals Seed morphology and anatomy of Hypericum elegans Steph. ex Willd.

2014 ◽  
Vol 35 (1) ◽  
pp. 15-18
Author(s):  
Piotr Szkudlarz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Eastern Europe ◽  
Seed Coat ◽  
Central And Eastern Europe ◽  
Seed Morphology ◽  
Seed Sample ◽  
Cell Layers ◽  
Mature Seeds ◽  
Scanning Electron

Abstract Hypericum elegans is a rare perennial distributed primarily in Central and Eastern Europe. Seed morphology and anatomy in H. elegans was studied on the basis of a seed sample from its only locality in Poland. Scanning electron microscopy revealed that the seed coat of mature seeds is composed basically of 3 cell layers: epidermal, subepidermal and sclerenchymatic. They are documented graphically here.

Seed morphology of perennial taxa of Euphorbia section Pithyusa (Euphorbiaceae) in Turkey

Phytotaxa ◽  
2018 ◽  
Vol 336 (3) ◽  
pp. 263
Author(s):  
İLKER GENÇ ◽  
ŞÜKRAN KÜLTÜR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Seed Morphology ◽  
Seed Shape ◽  
Seed Surface ◽  
Surface Ornamentation ◽  
Seed Characteristics ◽  
Scanning Electron ◽  
Comprehensive Study

A comprehensive study based on seed morphology of perennial Euphorbia (Euphorbiaceae) sect. Pithyusa species occurring in Turkey is presented. A total of 14 species were studied. Seed characteristics were examined using scanning electron microscopy (SEM) as well as dissecting light microscopy. Significant features are: seed size, seed shape, shape of caruncle and seed surface ornamentation. Three different seed surface types (smooth, pitted, and wrinkled) were observed. Four main seed shapes (ovoid, oblong, quadrangular, and globose), as well as seven types of seed coat ornamentation (reticulate-areolate, areolate, alveolate, falsifoveate, pusticulate, colliculate and smooth) were found. The number of testa cells per 100 µm2 and also its range, from 8–12 to 57–63, are given.

Seed morphology of Epilobium and Chamaenerion (Onagraceae) in Turkey

Phytotaxa ◽  
2017 ◽  
Vol 331 (2) ◽  
pp. 169 ◽  
Author(s):  
KAMİL COŞKUNÇELEBİ ◽  
SERDAR MAKBUL ◽  
SEDA OKUR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Morphology ◽  
Morphological Features ◽  
Seed Shape ◽  
Generic Level ◽  
Specific Level ◽  
Periclinal Wall ◽  
First Time ◽  
Scanning Electron

Macro- and micro-morphological features of seeds belonging to 26 taxa from Turkey were observed under the light and scanning electron microscopy. Present findings partly agree with segregation of Epilobium and Chamerion at generic level. The members of the genus Epilobium were distinguished by seeds with conical, semispherical, cylindrical or crest-like papillae or without papillae, granulate periclinal surfaces, papillae with parallel, radial, irregular or spirally furrow and the members of Chamerion were distinguished by seeds crest-like papillae or without papillae and without granulate periclinal surfaces and without furrow. The results also showed that seed shape, presence/absence of papillae and beak, papillae shape and ornamentation, and periclinal wall features are valuable for delimiting the examined taxa specific level within both genera. A key to Turkish Epilobium and Chamerion taxa based on seed morphology is presented for the first time

Portulaca oleracea aggregate (Portulacaceae) from the Chernivtsi Region (Ukraine)

2020 ◽  
Vol 12 (2) ◽  
pp. 251-262
Author(s):  
Olena Bulakh ◽  
Olena Volutsa ◽  
Alla Tokaryuk ◽  
Vasyl Budzhak ◽  
Ksenia Korzhan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Smooth Surface ◽  
Seed Morphology ◽  
Portulaca Oleracea ◽  
Scanning Microscope ◽  
Surface Ultrastructure ◽  
Seed Surface ◽  
Scanning Electron ◽  
Brown Color

At the results of investigation of micromorphology features of seed surface of the Portulaca oleracea aggr. (Portulacaceae Juss.) from Chernivtsi Region (Ukraine) six morphotypes of this taxa were recorded. Some peculiarities of the seed morphology of Portulaca L., and features of the ultrastructure of seed surface of the P. oleracea aggr. morphotypes, based on the results of micromorphological studies with using electronic scanning microscope was described. The general for the representative of the genus (e.g. globous, ovate or almost reniform shaped of seeds; black or dark brown color) and specify for the morphological types (star-shaped, isodiametric or elongate cells of seed surface with central part and long or short rays; smooth surface of seed or with knobs (from 0,03 mm in diameter) or papillae (0,01–0,02 mm), etc.) peculiarities are determined. The original scanning electron microscopy (SEM) photographs of seed surface ultrastructure of the studied morphological types and key fragment for its determination are suggested. According to our investigation six morphotypes of Portulaca oleracea aggr. are presented in Chernivtsi Region. Some of them are new for studied territory (P. granulatostellulata (Poelln.) Ricceri & Arrigoni, P. papillatostellulata (Danin & H.G. Baker) Danin), and other (Portulaca nitida (Danin & H.G. Baker) Ricceri & Arrigoni, P. trituberculata Danin, Domina & Raimondo, P. tuberculata (Danin & H.G. Baker) Danin) – new floristic records for Ukraine, and one of them (P. oleracea) – was known before also. The maps of distribution of this morphotypes in the region are presented. At the results of morphotypes distribution the most common is P. granulatostellulata and P. oleracea – rare in studied region like as in Europe also.

scholarly journals Comparative morphology and anatomy of seeds of some Aethionema W.T. Aiton (Brassicaceae) taxa from Turkey

2019 ◽  
Vol 26 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Mehmet Cengiz Karaismailoğlu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Principal Component Analysis ◽  
Principal Component ◽  
Comparative Morphology ◽  
Seed Morphology ◽  
Anatomical Features ◽  
Major Significance ◽  
Surface Patterns ◽  
Scanning Electron

Seed morphology and anatomy are taxonomically significant in Brassicaceae. The seed structures of Aethionema from Turkey, which include 12 taxa (Aethionema syriacum, A. froedinii, A. arabicum, A. eunomioides, A. fimbriatum, A. speciosum subsp. speciosum, A. speciosum subsp. compactum, A. saxatile, A. oppositifolium, A. iberideum, A. armenum, A. grandiflorum) were studied for knowing seed morphological and anatomical features with one-way analysis of variance, cluster analysis and principal component analysis. Seed size, shape and color were examined with stereomicroscopy.The surface patterns of seed were observed using Scanning Electron Microscopy (SEM). In addition, structure, and thicknesses of testa and endosperm were investigated anatomically. Thickness of testa and endosperm were of major significance to illustrate interspecific relations among the examined taxa.

scholarly journals Systematic significance of micromorphological and palynological characteristics in Lagochilus Bunge ex Benth. (Lamiaceae) in Iran

2020 ◽  
Vol 63 (2) ◽  
pp. 143-155
Author(s):  
Fatemeh Azimishad ◽  
Masoud Sheidai ◽  
Maryam Keshavarzi ◽  
Seyed Mehdi Talebi ◽  
Zahra Noormohammadi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Multivariate Analysis ◽  
Pollen Morphology ◽  
Glandular Trichomes ◽  
Pollen Grains ◽  
Cell Number ◽  
Systematic Significance ◽  
Qualitative Characteristics ◽  
Scanning Electron

Lagochilus is a genus with ten taxa (species, subspecies and variety) in Iran, which nine of them are endemic. This is the first micromorphological investigation of this genus. Micromorphological features of trichomes on the stems, leaves and calyces, and also pollen morphology of 19 populations were investigated by scanning electron microscopy. Two types of trichome (glandular and non-glandular) including 14 forms were described. Here, among the non-glandular trichomes, cell number and size of trichomes are considered as valuable characteristics, while the glandular trichomes are observed as stalked, sessile and peltate. Lagochilus pollen grains are tricolpate and small to medium sized. The basic shape of the pollen grains in most taxa is prolate, however prolate-subprolate pollen grains was recorded for L. aucheri ssp. aucheri var. aucheri 2. Four types of exine sculpture patterns were distinguished: bireticulate, reticulate, microreticulate and incomplete reticulate. Quantitative and qualitative characteristics were examined by multivariate analysis. The results indicated that the studied taxa were separated from each other; however varieties of L. aucheri did not grouped together. The results support the existence of known varieties in L. aucheri. In general, our investigations reveal the usefulness of micromorphological characteristics in taxon delimitation at the specific and infraspecific levels.

scholarly journals Variation in seed morphology in the genus Erica L. (Ericaceae)

2009 ◽  
Vol 16 (1) ◽  
pp. 1-106 ◽  
Author(s):  
Piotr Szkudlarz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cape Floristic Region ◽  
Seed Morphology ◽  
Key To Species ◽  
Tropical Africa ◽  
Seed Shape ◽  
Diagnostic Features ◽  
Seed Characteristics ◽  
Scanning Electron

Variation in seed morphology in the genusEricaL. (Ericaceae)Seed morphology was studied in 136 species ofErica, including 123 from South Africa (Cape Floristic Region), 5 from tropical Africa, and 8 from Europe. Seed anatomy was studied in 13 selected species by light and scanning electron microscopy. Seed morphology of each species was described and documented by SEM micrographs. Ten major diagnostic features were selected, concerning seed shape, primary sculpture, and fine relief. On the basis of these features, the species were divided into 14 groups. Within them, 40 morphologically homogeneous subgroups were distinguished, which could possibly be used in future revisions of the genus. A key to species identification has been developed on the basis of seed characteristics. A very close similarity was observed between seeds of someEricaspecies from distant parts of the distribution range of this genus.

scholarly journals SEED MORPHOLOGY IN OnobrychisMILLERSECTION HYMENOBRYCHIS DC. FROM TURKEY

2015 ◽  
Vol 33 (4) ◽  
pp. 699-705 ◽  
Author(s):  
M. ÖZKAN ◽  
E. AKTOKLU ◽  
C. ÖZDEMIR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Size ◽  
Seed Morphology ◽  
Identification Process ◽  
Diagnostic Characters ◽  
Seed Surface ◽  
Surface Micromorphology ◽  
Scanning Electron

ABSTRACT The seed (nutlet) morphology of four Onobrychis Miller (Fabaceae: subfamily Papilionoideae, Section Hymenobrychis DC.) taxa from Turkey, including three endemic taxa, was examined using scanning electron microscopy. Onobrychis tournefortii, O. galegifolia, O. cappadocica, O. albiflora. The seed examined exhibited variation in size, shape, colour, and surface sculpturing. Seed size ranged between 4.0-5.2 mm length and 2.0-3.6 mm width. Observed shapes included; ellipticus anguste asymmtricus reniformis, Ovatus anguste asymmetricus reniformis and ellipticus reniformis. Seed surface sculpturing revealed two distinct types: reticulate and rugulate. Species of Onobrychisare generally similar and confused with those of Hedysarumduring the identification process. Seed surface micromorphology can suggest taxonomical diagnostic characters for distinguishing species. Many of these characteristics are diagnostic at both the generic and specific levels.

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