scholarly journals Seed coat and fruit surface micromorphology of some Cynoglossum L. (Boraginaceae) species

1970 ◽  
Vol 37 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Oznur Ergen Akcin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Black Sea ◽  
Seed Coat ◽  
Black Sea Region ◽  
Surface Micromorphology ◽  
Surface Ornamentation ◽  
Seed Coats ◽  
Fruit Surface ◽  
Scanning Electron

Fruits and seeds of Cynoglossum creticum Miller, C. officinale L., C. montanum L. and C. glochidiatum Wallich) distributed in the Middle and East Black Sea Region in Turkey were studied by scanning electron microscopy. Some differences were found in seed coats and fruit surfaces. SEM observations of fruit surface were focused on surface ornamentation and glochids. Two types (tuberculate and granulate) and two subtypes (granulate - punctuate and granulate - tuberculate) were observed among the species. Reticulate type of seed coat and detailed subtypes of reticulate types were determined on the basis of ornamentation of the seed coats.     Key words: Cynoglossum, Fruit surface, Seedcoat, SEM, Micromorphology, Boraginaceae doi:10.3329/bjb.v37i2.1716 Bangladesh J. Bot. 37(2): 115-119, 2008 (December)

Detailed analysis of Cucurbita pepo seed coat types and structures with scanning electron microscopy

Botany ◽  
2012 ◽  
Vol 90 (11) ◽  
pp. 1161-1169 ◽  
Author(s):  
Jana Murovec ◽  
Kazimir Drašlar ◽  
Borut Bohanec
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Coat ◽  
Cucurbita Pepo ◽  
Fluorescent Microscopy ◽  
Wall Thickening ◽  
Pumpkin Seed ◽  
First Time ◽  
Seed Coats ◽  
Scanning Electron

Discovery of a mutant thin-coated seed phenotype at the end of the 19th century facilitated pumpkin (Cucurbita pepo L.) seed oil production and increased botanic interest in seed coat types and their structures. The main seed coat characteristics were usually analyzed by light and fluorescent microscopy, and more recently, seed coat traits have also been mapped on a C. pepo gene map. The aim of our research was to collect and describe various pumpkin seed types and to analyze, using scanning electron microscopy (SEM), the detailed structure of their seed coats. Seeds of 29 cultivars and landraces were collected and visually evaluated based on seed coat characteristics. Seed samples belonging to different seed types discovered in our collection were transversely sectioned and analyzed by SEM. Twelve seed types were determined, and SEM analysis revealed high variability in their seed coat structures. Using SEM, tissue and cell structures were clearly visible, and novel details of cell and tissue topography were documented. Hypodermal and aerenchyma cells in wild-type seed coats showed fibrous or reticulate secondary cell wall thickening, respectively. In mutant seed types, an absence of different seed coat layers was clearly noted, while the remaining layers were distinctly pronounced. A new completely hull-less seed type was described for the first time. Description of the variability of seed coats in pumpkin was complemented by novel seed coat types, and their structures were analyzed in detail the first time by SEM.

Taxonomic application of macro and micro morphological characters of seeds in Astragalus L. (Galegeae, Fabaceae) in India

Phytotaxa ◽  
2021 ◽  
Vol 502 (2) ◽  
pp. 191-207
Author(s):  
SHIVANI KASHYAP ◽  
CHANDAN KUMAR SAHU ◽  
ROHIT KUMAR VERMA ◽  
LAL BABU CHAUDHARY
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Seed Coat ◽  
Morphological Plasticity ◽  
Morphological Characters ◽  
Individual Species ◽  
Large Size ◽  
The Individual ◽  
Scanning Electron

Due to large size and enormous morphological plasticity, the taxonomy of the genus Astragalus is very complex and challenging. The identification and grouping of species chiefly based on macromorphological characters become sometimes difficult in the genus. In the present study, the micromorphology of the seeds of 30 species belonging to 14 sections of Astragalus from India has been examined applying scanning electron microscopy (SEM) along with light microscopy (LM) to evaluate their role in identification and classification. Attention was paid to colour, shape, size and surface of seeds. The overall size of the seeds ranges from 1.5–3.2 × 0.8–2.2 mm. The shape of the seeds is cordiform, deltoid, mitiform, orbicular, ovoid and reniform. The colour of seeds varies from brown to blackish-brown to black. Papillose, reticulate, ribbed, rugulate and stellate patterns were observed on the seed coat surface (spermoderm) among different species. The study reveals that the seed coat ornamentations have evolved differently among species and do not support the subgeneric and sectional divisions of the genus. However, they add an additional feature to the individual species, which may help in identification in combination with other macro-morphological features.

Micromorphological observation of seed coat of Eucalyptus species (Myrtaceae) using scanning electron microscopy technique

2018 ◽  
Vol 82 (2) ◽  
pp. 75-84 ◽  
Author(s):  
Muhammad Luqman ◽  
Muhammad Zafar ◽  
Mushtaq Ahmad ◽  
Munir Ozturk ◽  
Shazia Sultana ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Coat ◽  
Eucalyptus Species ◽  
Scanning Electron Microscopy Technique ◽  
Microscopy Technique ◽  
Scanning Electron

scholarly journals Surface Ornamentation of Cyanophora paradoxa (Cyanophorales, Glaucophyta) Cells as Revealed by Ultra-High Resolution Field Emission Scanning Electron Microscopy

CYTOLOGIA ◽  
2014 ◽  
Vol 79 (1) ◽  
pp. 119-123 ◽  
Author(s):  
Toshiyuki Takahashi ◽  
Mayuko Sato ◽  
Kiminori Toyooka ◽  
Hisayoshi Nozaki
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
High Resolution ◽  
Field Emission ◽  
Cyanophora Paradoxa ◽  
Surface Ornamentation ◽  
Scanning Electron

Isoetes × marensis, a new interspecific hybrid from western Canada

1995 ◽  
Vol 73 (9) ◽  
pp. 1345-1353 ◽  
Author(s):  
Donald M. Britton ◽  
Daniel F. Brunton
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
British Columbia ◽  
Key Words ◽  
North American ◽  
Interspecific Hybrid ◽  
Western Canada ◽  
Hybrid Plants ◽  
Surface Ornamentation ◽  
Scanning Electron

A new interspecific hybrid in Isoetes, I. maritima Underw. × I. howellii Engelm., is delineated and described from the Shuswap Highlands region of British Columbia by means of cytology and scanning electron microscopy of spores. Isoetes × marensis D.M. Britton and D.F. Brunton, hyb.nov. is the name proposed for this taxon. It is triploid (3x; 2n = 33) and is believed to produce only sterile and (or) aborted spores. Hybrid plants have polymorphic spores that demonstrate size and surface ornamentation features intermediate between those of the putative parents. Three populations were examined, each growing with both of the putative parents in silt and sand among granite cobble over clay along an emergent lakeshore. Isoetes × marensis is the first described North American hybrid involving an amphibious Isoetes. It is expected to be a rare taxon owing to the restricted sympatric area of the putative parents and their tendency to occupy different habitats. Key words: Isoetes, Isoetes howellii, Isoetes maritima, hybrid, British Columbia.

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.

Scanning electron microscopy of the seed coat in the genus Paulownia (Scrophulariaceae)

1993 ◽  
Vol 111 (4) ◽  
pp. 505-511 ◽  
Author(s):  
RADMILA VUJIČIĆ ◽  
D. GRUBIŠIĆ ◽  
R. KONJEVIĆ
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Seed Coat ◽  
Scanning Electron

scholarly journals Neutron Activation Analysis and Scanning Electron Microscopy of Phytoplankton in the Coastal Zone of Crimea (The Black Sea)

2014 ◽  
Vol 05 (05) ◽  
pp. 323-334
Author(s):  
P. S. Nekhoroshkov ◽  
A. V. Kravtsova ◽  
M. V. Frontasyeva ◽  
Yu. N. Tokarev
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Coastal Zone ◽  
Black Sea ◽  
The Black Sea ◽  
Scanning Electron

scholarly journals Micromorphological Characteristics of Fruit Surfaces of Some Usable Species of the Genus Valeriana (Valerianaceae) Among Ukrainian Flora

2021 ◽  
Vol 74 ◽  
Author(s):  
Olga Tsarenko ◽  
Galina Shikhaleyeva ◽  
Valentyna Minarchenko ◽  
Iryna Tymchenko ◽  
Olena Bulakh
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Shape ◽  
Valeriana Officinalis ◽  
Adaxial Side ◽  
Stomatal Complex ◽  
Aerial Parts ◽  
Periclinal Walls ◽  
Fruit Surface ◽  
Scanning Electron

Abstract The micromorphological features of the fruit surfaces of nine species of Ukrainian flora, namely Valeriana tuberosa L., Valeriana tripteris L., Valeriana rossica P. Smirn., Valeriana stolonifera Czern., Valeriana grossheimii Worosch, Valeriana sambucifolia Mikan fil., Valeriana officinalis L. s. str., Valeriana wolgensis Kazak. [ Valeriana officinalis var. nitida (Kreyer) Rostanski], and Valeriana simplicifolia (Rchb.) Kabath, were examined. Depending on the presence and localization of pubescence on the surface of the fruit, three groups of species were distinguished: those with glabrous fruits, those with fruits pubescent only on the adaxial side, and those with fruits pubescent on both sides. Scanning electron microscopy revealed the additional characteristics of the fruits (microsculpture of the fruit surface, shape of cuticular formations on the surface of the outer periclinal walls of epidermal cells and on the surface of hairs, and structure of the stomatal complex), which were useful for the identification of the species. At the supraspecific level, the revealed features of the fruit surfaces somewhat overlapped and could be used to identify series and sections only as additional features. Based on the studied samples from herbarium material (KW), V. officinalis var. nitida was considered synonymous with V. wolgensis since there were no micromorphological differences between their fruits. The detailed micromorphological characteristics of the fruit surfaces of all the studied species can be used for further comparative morphological investigations of different aerial parts to identify stable features independent of geographic and ecological conditions.

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