scholarly journals Structural Features of Vegetative Organs <i>Spiraea hypericifolia</i> L., Growing in Uzbekistan

2019 ◽  
Vol 10 (11) ◽  
pp. 2086-2095
Author(s):  
Sakhobat U. Kuzieva ◽  
Dilfuza A. Imomova ◽  
Guljan M. Duschanova
Keyword(s):  
Structural Features ◽  
Vegetative Organs

scholarly journals Structural Features of Carnivorous Plant (Genlisea, Utricularia) Tubers as Abiotic Stress Resistance Organs

2020 ◽  
Vol 21 (14) ◽  
pp. 5143
Author(s):  
Bartosz J. Płachno ◽  
Saura R. Silva ◽  
Piotr Świątek ◽  
Kingsley W. Dixon ◽  
Krzystof Lustofin ◽  
...  
Keyword(s):  
Phylogenetic Trees ◽  
Structural Features ◽  
Carnivorous Plant ◽  
Ancestral State Reconstruction ◽  
Carnivorous Plants ◽  
Ancestral State ◽  
Bud Bank ◽  
Vegetative Organs ◽  
State Reconstruction ◽  
Storage Structures

Carnivorous plants from the Lentibulariaceae form a variety of standard and novel vegetative organs and survive unfavorable environmental conditions. Within Genlisea, only G. tuberosa, from the Brazilian Cerrado, formed tubers, while Utricularia menziesii is the only member of the genus to form seasonally dormant tubers. We aimed to examine and compare the tuber structure of two taxonomically and phylogenetically divergent terrestrial carnivorous plants: Genlisea tuberosa and Utricularia menziesii. Additionally, we analyzed tubers of U. mannii. We constructed phylogenetic trees using chloroplast genes matK/trnK and rbcL and used studied characters for ancestral state reconstruction. All examined species contained mainly starch as histologically observable reserves. The ancestral state reconstruction showed that specialized organs such as turions evolved once and tubers at least 12 times from stolons in Lentibulariaceae. Different from other clades, tubers probably evolved from thick stolons for sect. Orchidioides and both structures are primarily water storage structures. In contrast to species from section Orchidioides, G. tuberosa, U. menziesii and U. mannii form starchy tubers. In G. tuberosa and U. menziesii, underground tubers provide a perennating bud bank that protects the species in their fire-prone and seasonally desiccating environments.

scholarly journals Morphological and Anatomical Analysis of Vegetative Organs of Avena pilosa (Roem. & Schult.) Bieb.

2021 ◽  
Vol 7 (4) ◽  
Author(s):  
I. Aliyeva
Keyword(s):  
Leaf Area ◽  
Morphological Feature ◽  
Structural Features ◽  
Structural Elements ◽  
Vegetative Organs ◽  
Anatomical Analysis ◽  
Drought Conditions ◽  
Physiological Symptoms ◽  
Adaptation To Drought

The article provides information about the structural features of the fodder plant — Avena pilosa (Roem. & Schult.) Bieb., which is widespread on winter pastures in Azerbaijan. As a result of the morphological-anatomical analysis, important structural elements were identified, as well as the morphophysiology and adaptation of this species. As a result of adaptation to drought conditions, this plant showed signs of strong xerophilization. Xerophytes — plants for which the aridity of the norm. Common symptoms of xerophytes — a small evaporating surface, and other structural and physiological symptoms are very diverse. Reduction of leaf area is the main morphological feature of xerophytes

scholarly journals Structural features of the vegetative bodies of Hibiscus syriacus L. (Sev. Malvaceae Juss.) growing under the conditions in Uzbekistan

2021 ◽  
Vol 30 ◽  
pp. 04006
Author(s):  
Abdikhofiz Rakhimov ◽  
Lutfullo Yoziev ◽  
Guljan Duschanova
Keyword(s):  
Structural Features ◽  
Anatomical Structure ◽  
Vegetative Organs ◽  
First Time ◽  
Hibiscus Syriacus

The article studies the anatomical structure of the vegetative organs, stems, leaves and leaf blades of Hibiscus syriacus L. in Uzbekistan for the first time.

scholarly journals Structural features of the axial vegetative organs of representatives of the genus Veronica L. (Plantaginaceae Juss.) of the Voronezh region

2020 ◽  
Vol 19 (2) ◽  
pp. 108-112
Author(s):  
V. N. Drozhzhina
Keyword(s):  
Life Forms ◽  
Structural Features ◽  
Microscopic Structure ◽  
Ecological Groups ◽  
Vegetative Organs ◽  
General Plan ◽  
Voronezh Region ◽  
Individual Features ◽  
Almost All

The structure of roots, rhizomes and stems of species of the genus Veronica L. growing on the territoryof the Voronezh region is analyzed. The studied species belong to various ecological groups and life forms. The resultsshow a general plan of the structure of the organs of the genus. Despite this, the existing differences in their life formsand ecological groups allow us to identify a number of marker structures. Almost all species show individual features inthe microscopic structure of vegetative organs that can be used for diagnostic purposes. The most significant are the stemstructures.

Structural features of vegetative organs in some Ficus carica L. cultivars cultured in vitro

2021 ◽  
pp. 47-52
Author(s):  
O.V. Mitrofanova ◽  
V.A. Brailko ◽  
E.L. Shishkina ◽  
I.V. Mitrofanova
Keyword(s):  
Structural Features ◽  
Ficus Carica ◽  
Vegetative Organs

scholarly journals A comparative anatomical and morphological study of vegetative organs of Iris sogdiana Bunge from natural populations of southeastern Kazakhstan

2020 ◽  
Vol 99 (3) ◽  
pp. 109-118
Author(s):  
Madina Ramazanova ◽  
◽  
Natalja Kurbatova ◽  
Nadezhda Gemejiyeva ◽  
Chinargul Aldassugyrova ◽  
...  
Keyword(s):  
Natural Populations ◽  
Morphological Structure ◽  
Structural Features ◽  
Vascular Bundles ◽  
Vegetative Organs ◽  
Adaptive Capabilities ◽  
Study Results ◽  
Short Period ◽  
Microscopic Studies ◽  
Growing Conditions

A comparative anatomical and morphological analysis of the vegetative organs of Iris sogdiana from various growing conditions has interest that allow to identify features and adaptive capabilities of the species. Microscopic studies of I. sogdiana vegetative organs from natural populations of southeastern Kazakhstan were carried out for the first time. A positive correlation between the growth habitat and morphometric parameters of the species has been shown. The structural features of vegetative organs were revealed and it's established that development of the tissues that covers the plant, ground and vascular in I. sogdiana is associated with a moisturizing gradient. Numerous stomata are characteristic for the leaf blade slightly submerged deep into the leaf; numerous intercellular spaces; airways in the leaf mesophyll; vascular bundles surrounded by sclerenchyma cells. The stem has a certain degree of ribbing a thickened surface of the outer cells of epidermis, a pronounced layer of pericycle sclerenchyma. The root has a one-two-layer ectoderm developed thickening of the radial membranes of the endoderm cells and a different number of vessels that depending on the growth location. The study results indicates that plants of 1 and 2 populations are characterized by more xerophytic features of the organization and for 3 population plants mesophytic features are inherent. The studied species is distinguished by averaged morphometric indicators of the structure and includes the mesoxerophytic organization of the anatomical structure. The morphological structure of I. sogdiana allows to conclude that a sufficient amount of moisture is necessary for a short period of vegetation and for development of the plant.

scholarly journals Structural Features of the Vegetative Organs of <i>Allium praemixtum</i> Vved. in Different Ecological Conditions

2019 ◽  
Vol 10 (04) ◽  
pp. 536-544
Author(s):  
Akida T. Abdullaeva ◽  
Guljan M. Duschanova ◽  
Muhabbat H. Ravshanova
Keyword(s):  
Structural Features ◽  
Vegetative Organs ◽  
Ecological Conditions

Electron microscopy and diffraction studies of polyimides

1983 ◽  
Vol 41 ◽  
pp. 28-29
Author(s):  
O.C. de Hodgins ◽  
K. R. Lawless ◽  
R. Anderson
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Structural Features ◽  
Inert Atmosphere ◽  
Polyimide Films ◽  
Resolution Electron ◽  
The Matrix ◽  
High Resolution Electron Microscope ◽  
Diffraction Patterns ◽  
Polymeric Samples

Commercial polyimide films have shown to be homogeneous on a scale of 5 to 200 nm. The observation of Skybond (SKB) 705 and PI5878 was carried out by using a Philips 400, 120 KeV STEM. The objective was to elucidate the structural features of the polymeric samples. The specimens were spun and cured at stepped temperatures in an inert atmosphere and cooled slowly for eight hours. TEM micrographs showed heterogeneities (or nodular structures) generally on a scale of 100 nm for PI5878 and approximately 40 nm for SKB 705, present in large volume fractions of both specimens. See Figures 1 and 2. It is possible that the nodulus observed may be associated with surface effects and the structure of the polymers be regarded as random amorphous arrays. Diffraction patterns of the matrix and the nodular areas showed different amorphous ring patterns in both materials. The specimens were viewed in both bright and dark fields using a high resolution electron microscope which provided magnifications of 100,000X or more on the photographic plates if desired.

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