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

2020 ◽  
Vol 21 (14) ◽  
pp. 5143
Author(s):  
Bartosz J. Płachno ◽  
Saura R. Silva ◽  
Piotr Świątek ◽  
Kingsley W. Dixon ◽  
Krzystof Lustofin ◽  
...  

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.


2020 ◽  
pp. 245-250
Author(s):  
Lyudmila Leonidovna Sedel'nikova ◽  
Ol'ga Vasil'yevna Chankina

The data on the content of 22 chemical elements in the leaves and rhizomes of Hemerocallis hybrida plants of the Speak to me and Regal Air varieties growing in soil-ecological conditions of the forest-steppe zone of Western Siberia are presented. The General regularities of accumulation and distribution of macro- and microelements in leaves and rhizomes of plants of two varieties of daylilies are established: excess of the content of many microelements (vanadium, chromium, nickel, rubidium) in rhizomes in comparison with leaves. It was revealed that the concentration of chemical elements in plants differed both in organs and between varieties. The peculiarity of the mineral composition of the Regal Air variety was the excess of the total content of trace elements in 1.5–3 times compared to the variety Speak to me. Concentrations of individual elements in the leaves and rhizomes of daylilies differed significantly. It is shown that in both varieties in the leaves the amount of bromine was 4 times higher than in rhizomes, strontium – 1.5–1.8 times. The concentration of toxicant elements in the phytomass of Hemerocallis hybrida varieties was significantly lower than permissible concentration, which makes it possible to use them for medicinal purposes.


2021 ◽  
Vol 7 (4) ◽  
Author(s):  
I. Aliyeva

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


2021 ◽  
Vol 30 ◽  
pp. 04006
Author(s):  
Abdikhofiz Rakhimov ◽  
Lutfullo Yoziev ◽  
Guljan Duschanova

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.


Author(s):  
V. N. Drozhzhina

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.


2020 ◽  
Vol 24 ◽  
pp. 00078
Author(s):  
Vasila Sharipova

The features of the structure of the leaves of Dodartia orientalis, growing in different ecological conditions have been studied. Haloxeromorphic signs have been mostly revealed in the plants growing in the arid conditions of Ustyurt. Mesomorphic signs have been identified in the plants growing conditions of Tashkent.


2021 ◽  
pp. 47-52
Author(s):  
O.V. Mitrofanova ◽  
V.A. Brailko ◽  
E.L. Shishkina ◽  
I.V. Mitrofanova

Author(s):  
Madina Ramazanova ◽  
◽  
Natalja Kurbatova ◽  
Nadezhda Gemejiyeva ◽  
Chinargul Aldassugyrova ◽  
...  

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.


Sign in / Sign up

Export Citation Format

Share Document