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1

Comparison of leaf yields and chemical composition of the Hamburg and leafy types of parsley. I. Leaf yields and their structure

100%
Kmiecik W., Lisiewska Z.
Folia Horticulturae
|
1999
|
tom 11
|
nr 1
2

Constant water environment and peculiarity of leaf structure of some water plants

88%
Nedukha O. M.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Structure of Kalanchoe pumila Bak. leaves (Crassulaceae DC.)

75%
Chernetskyy M., Weryszko-Chmielewska E.
Acta Agrobotanica
|
2008
|
tom 61
|
nr 2
The structure of Kalanchoё pumila Bak. was studied with the use of stereoscopic, light, scanning and transmission electron microscopy. It was found that the chlorenchymatic tissue was divided into subepidermal small-celled mesophyll and large-celled (water transporting, CAM type) mesophyll, placed in the central part of the leaf. The mesophyll structure and its cell ultrastructure indicate C3 photosynthesis in this taxon, whereas CAM photosynthesis, being an adaptive syndrome, is induced by external factors. Three groups of xeromorphic traits were observed in the structure of K. pumila leaves, related to: 1) storing water in the ground and epidermal tissues, 2) decreased transpiration (the closing of stomata during heat), 3) avoiding excess insolation of the mesophyll and overheating of the leaf (striated cuticula, anthocyan pigments, tannin storage). The last two groups of xeromorphic traits also include thickening of the outer walls of cuticular cells, a thick-layered cuticula, and the presence of epicuticular wax and calcium carbonate deposits. Microchannels which enhance transpiration effi ciency in developing K. pumila leaves were found in the vicinity of anticlinal walls in the outer walls of epidermal cells. Calcium deposits produced on the leaf surfaces protect them in extreme conditions. Adaptive traits in the structure of K. pumila leaves are conservative and they confi rm the relations between this taxon and the conditions in their native land.
4

Leaf structure and proline accumulation under salt and water stress

75%
Belyavskaya N. A., Chyzhykova O. A., Kovtun N. Y., Sidnev Y. P., Palladina T. O.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
5

Synthetic antidepressants effect on proline accumulation and leaf structure in maize seedlings under salinity

63%
Chyzhykova O. A., Belyavskaya N. A., Palladina T. O.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
6

Structure of leaves and phenolic acids in Kalanchoe daigremontiana Raym.-Hamet and H. Perrier

63%
Chernetskyy W., Wozniak A., Skalska-Kaminska A., Zuraw B., Blicharska E., Rejdak R., Donica H., Weryszko-Chmielewska E.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2018
|
tom 17
|
nr 4
Kalanchoë daigremontiana leaves contain phenolic compounds, which are one of the determinants of plant therapeutic properties. Light and scanning electron microscopes were used to analyse the structure of leaves. The main aims of the study included the analysis of the anatomy of leaves, localisation of phenolic compounds, and identification of phenolic acids. The thickness of the amphistomatic leaf blades, the number, the size of stomata, and the value of stomatal index, as well as the structure of the parenchyma cells have indicated that K. daigremontiana is adapted to arid environments. The histochemical assays revealed the presence of phenolic idioblasts in the leaf blades and petioles. The idioblasts were located in the epidermis, subepidermal layer, a deeper portion of the mesophyll, and in the sheaths of vascular bundles. The phytochemical analyses of leaves demonstrated the presence of gallic, ferulic, caffeic, p-coumaric, and protocatechuic acids in the form of esters. We carried out the research of the anatomical structure of K. daigremontiana leaves, which has been insufficiently documented to date. We have also revealed new localisation of phenolic compounds in the leaf tissues of this species.
7

Chemical composition and morphology of basal leaves of Trollius europaeus L. and T. altissimus Crantz [Ranunculaceae]

63%
Maciejewska-Rutkowska I., Antkowiak W., Jagodzinski A. M., Bylka W., Witkowska-Banaszczak E.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 4
595-605
We studied characteristics of basal leaves of Trollius europaeus L. and T. altissimus Crantz, including blade morphology, phenolic acids and flavonoids. We also verified the influence of site conditions on leaf structure. co-chromatography showed mostly quantitative differences in the contents of particular phenolic acids and flavonoids in leaves. Similarly, there were no important morphological differences between the species and with respect to some traits a significant distinction appeared within T. altissimus populations. Additionally, site conditions had an effect on leaf morphology of both examined species. Therefore, based on our results, the separation of two Trollius species is questionable. The study supported the statement that T. europaeus and T. altissimus are not separated species, thus T. europaeus should be divided into two lower taxa in the rank of variety or subspecies.
8

Responses of light-tolerant and shade-tolerant Acer species to diverse irradiance

51%
Belyavskaya N. A., Topchiy N. M., Kovtun N. Y., Sidnev Y. P.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
9

The age-related changes of leaf structure and biochemistry in juvenile and mature subalpine fir trees (Abies faxoniana Rehder and E.H. Wilson.) along an altitudinal gradient

51%
Peng G., Wu C., Xu X., Yang D.
Polish Journal of Ecology
|
2012
|
tom 60
|
nr 2
In woody perennials, leaf structure and biochemistry vary with tree age under changing environments. However, the related eco-physiological mechanisms have not been elucidated yet. In this study, we investigated agerelated responses of juvenile and mature subalpine fir trees (Abies faxoniana Rehder & E.H. Wilson.) growing at altitudes between 2,500 and 3,500 m in the Wanglang Natural Reserve in southwest China, to study the adaptive strategies of different age trees to suit changing environments. We found that there were distinct age- and altituderelated changes in the structural and biochemical characteristics of leaves. At all altitudes, mature trees exhibited higher area- and mass-based leaf nitrogen content (Narea, Nmass), leaf mass per area (LMA) and stable isotope carbon composition (δ13C), and a lower chlorophyll (Chl) content than those juvenile trees, except for Nmass at 3,000 m as well as LMA at 2,750 m, where the values of Nmass and LMA in mature trees were slightly lower than those in juvenile trees. Furthermore, leaf characteristics showed significant differences in the change rates with altitude between different age groups. Our results indicated that assimilative organs in mature trees do not suffering from nutrient deficiency and that juvenile and mature trees possess different adaptive growth strategies under changing environments, as indicated by higher leaf N content in mature trees and the opposite patterns of LMA and Chl content between two age groups. We also concluded that juvenile could be more sensitive to global warming due to a greater altitudinal influence on the leaf traits in juvenile trees than those in mature trees.
10
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Comparative studies of the leaf morphology and structure of white ash Fraxinus americana L. and London plane tree Platanus acerifolia Willd growing in polluted area

51%
Dineva S. B.
Dendrobiology
|
2004
|
tom 52
3-8
The leaf blades of white ash Fraxinus americana L. and London plane tree Platanus acerifolia Willd. growing in heavy polluted industrial areas were studied for morphological and anatomical changes developed under the influence of industrial contamination. The aim of the investigation was to determine and compare the influences of air polluted with SO2, NxOx, Pb, As, Zn, Cu etc. on the morphology and the structure of the leaves of these deciduous trees. Both species are tolerant to environmental changes but with different environmental characteristics and tolerances and they are widely used for planting. Under polluted conditions, the trees strengthened the anatomic xeromorphic characteristics of their leaf structures, which gave them the opportunity to mitigate the stressful conditions of the environment. The observed responses are regarded as adaptive and compensative to the adverse effects of air pollution.
11

The influence of lead on structure of Cucumis sativus L. leaves

51%
Chwil M.
Folia Horticulturae
|
2005
|
tom 17
|
nr 2
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Preservation of features of anatomical polymorphism of Deschampsia antarctica É. Desv. (Poaceae) during in vitro clonal reproduction

51%
Nuzhyna N., Kunakh V., Poronnik O., Parnikoza I.
Acta Agrobotanica
|
2021
|
tom 74
|
nr 1
13

Lisciowy rysopis

32%
Narkiewicz M.
Kwietnik
|
2007
|
nr 02
44-45
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