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Wyszukujesz frazę "plant reproduction" wg kryterium: Temat


Wyświetlanie 1-14 z 14
Tytuł:
Forest tree research in post genomic era. Introduction to systems biology of broadleaves
Autorzy:
Staszak, A.M.
Pawlowski, T.A.
Powiązania:
https://bibliotekanauki.pl/articles/41059.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
forest tree
tree
genomics
proteomics
woody plant
biology
broadleaf
plant reproduction
plant physiology
Opis:
Trees are long living organisms, rarely used in molecular experiments because of large size of the genome and long time of reproduction cycle. Sequencing data from Populus trichocarpa genome allowed for the development of research on the processes associated with tree biology such as secondary wood formation, long-term perennial growth, seasonal changes, biotic interactions, evolution etc. Reference data enable the investigation of non-model trees such as Quercus or Fagus, having ecological and economic significance. During projects scientists use genomic, transcriptomic, proteomic and metabolomic approaches which contribute to better understanding of the physiological processes regulating tree biology. Data collected from these multiple studies need to be integrated. The integration of data is the subject of the newly established field of science called systems biology. This review presents progress in tree research after finishing the sequencing project of Populus. It concentrates on modern trends in 'omics' and systems biology study of temperate broadleave trees during the last 10 years of studies.
Źródło:
Dendrobiology; 2012, 68
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of environmental factors on reproduction of polar vascular plants
Autorzy:
Kellmann-Sopyla, W.
Pastorczyk, M.
Gielwanowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/11942.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmental factor
plant reproduction
polar plant
vascular plant
climate change
generative reproduction
warming
flower development
seed formation
air temperature
ultraviolet radiation
reproductive phase
vegetation
Opis:
In the last few decades, changes of reproductive pattern of polar vascular plants have been observed, for the benefit of generative propagation. The reasons for this phenomenon are attributed to intensively following climate change, whose effects may be various. Warming causes the production of the greater number of generative structures, with higher quality. Our macroscopic observations conducted on specimens of polar vascular plants, cultivated in University of Warmia and Mazury greenhouse, indicate that the effect of temperature increase on flower development and seed formation is inconsistent. On the other hand enhanced levels of UV-B radiation can negatively affect seedlings. The complexity of the climate change causes tremendous difficulties in defining a clear and unquestioned way of modifications during the reproductive phase of the described plants.
Źródło:
Papers on Global Change; 2011, 18
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Autovegetative reproduction in conservation and selective cultivation of Norway spruce Picea abies (L.) Karst of Istebna race
Autorzy:
Rylski, K
Powiązania:
https://bibliotekanauki.pl/articles/41485.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
autovegetative reproduction
plant reproduction
conservation
selective cultivation
Norway spruce
Picea abies
forest tree
rooting experiment
cutting
progeny
Opis:
The paper discusses the results of rooting experiments conducted with the cuttings obtained from 8-year-old spruce trees of Istebna race. The studies investigated the effects of endogenous factors, such as the place of extraction, length and origin of cuttings, and an exogenous factor, which is a rooting stimulus.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The beginnings of sexual land plant reproduction – regulation of gene expression involved in archegonia development in dioecious liverwort Pellia endiviifolia sp. B
Autorzy:
Sierocka, I.
Alba, S.
Karlowski, W.
Szweykowska-Kulinska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/80587.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
plant reproduction
gene expression
archegonial formation
dioecious liverwort
Pellia endiviifolia
morphological adaptation
terrestrial environment
life cycle
gametophyte
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new locality of weeping alkaligrass Carex secalina (Cyperaceae) in Poland
Autorzy:
Dominiak, M.
Jakubas, E.
Powiązania:
https://bibliotekanauki.pl/articles/790579.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
weeping alkaligrass zob.alkali grass
alkali grass
salt grass zob.alkali grass
Carex secalina
new locality
locality
Cyperaceae
threatened plant
plant reproduction
population size
habitat condition
Polska
Opis:
A rare and protected species of the sedge Carex secalina was recorded in Dulsk near Inowrocław (Kujawy-Pomerania Province) in June 2014. It occupied the shores of ephemeral midfield water reservoirs in the complex of intensively used crop fields. Two subpopulations of this sedge with 36 tussocks in total were found. In the first subpopulation, the tussock diameter reached up to 25 cm, with 12–16 generative shoots per a tussock, while in the second subpopulation, the diameter was up to 10.5 cm, with 2–11 generative shoots. The rapid spread of this halophyte species is probably connected with the presence of permanent soil seed bank. This observation indicates a high potential of Carex secalina to colonise new habitats.
Źródło:
Steciana; 2015, 19, 1
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variation in size-dependent fitness components in a terrestrial orchid, Dactylorhiza majalis (Rchb.) Hunt et Summerh., in relation to environmental factors
Autorzy:
Mroz, L.
Kosiba, P.
Powiązania:
https://bibliotekanauki.pl/articles/57438.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
variation
size-dependent fitness component
terrestrial orchid
orchid
Dactylorhiza majalis
environmental factor
European orchid
total leaf area
plant size
flowering probability
flower production
threshold size
plant reproduction
leaf area
meadow site
Polska
soil nutrient
plant population
Opis:
We investigated the flowering probability and flower production in relation to plant size in a terrestrial orchid, Dactylorhiza majalis at 10 meadow sites in central and southwestern Poland. These sites differed in altitude (low, high) and management (presence or absence of mowing). At all sites, concentrations of nutrients in the soil were also measured. The probability of flowering increased significantly with the size of the plant in all populations, indicating that individuals do not flower until they reach a threshold size. Populations at high altitudes and the unmown sites had significantly lower threshold sizes for reproduction and showed sharp increase in flowering probability with plant size, compared to other populations. The threshold sizes for reproduction tended to decrease at sites rich in N and Mg and poor in P and S. Flower production was also size-dependent in all populations. Considerable between-site differences were found in the slope and the intercept of the regression between plant size and flower production. Flower production at some sites, at high altitudes, increased more steeply with plant size than at other sites. However, no pattern in size-dependent flower production was found relative to the measured environmental variables. Most of the size-dependent components of flowering probability were related to each other but not with the size-dependent flower production.
Źródło:
Acta Societatis Botanicorum Poloniae; 2011, 80, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of dominant species on numbers and age structure of Iris sibirica L. population on blue moor-grass meadow in Southern Poland
Autorzy:
Kostrakiewicz, K
Powiązania:
https://bibliotekanauki.pl/articles/57143.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
generative reproduction
Iris sibirica
clonal plant
vegetative reproduction
Polska
dominant species
age structure
population
blue moor-grass meadow
seedling recruitment
plant ecology
Opis:
Two populations of Iris sibirica, a clonal species protected by law in Poland, occurring in patches of Molinietum caeruleae, of similar floristic composition although with different dominant species, were studied. In the Stanisławice locality, species with a high competitive potential prevailed, contrary to the Opatkowice locality, where the species of low competitive potential dominated. It was established that vegetative propagation ensures the continued presence of populations in both localities, although the proximity of plants with high competitive potential limits the vegetative propagation of ramet clusters of Iris sibirica. Despite the high level of seed production, the recruitment of seedlings in both patches is possible only in artificially created gaps. The field observations support the conclusion that creating gaps allowing for germination of seeds and development of seedlings, as well as eliminating expansive neighbours allowing proliferation of ramet clusters of Iris sibirica, is an affective way of protecting populations of this species.
Źródło:
Acta Societatis Botanicorum Poloniae; 2007, 76, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some aspects of symplasmic communication during somatic embryogenesis of tree fern Cyathea delgadii
Autorzy:
Wrobel-Marek, J.
Grzyb, M.
Kurczynska, E.
Rybczynski, J.
Mikula, A.
Powiązania:
https://bibliotekanauki.pl/articles/951252.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
somatic embryogenesis
symplasmic communication
tree fern
Cyathea delgadii
plant propagation
sexual reproduction
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generative reproduction and external conformation of Echinochloa crus-galli [L.] P. Beauv. plants under various density conditions
Autorzy:
Kucewicz, M.
Holdynski, C.
Powiązania:
https://bibliotekanauki.pl/articles/65545.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
generative reproduction
density condition
individual fertility
external conformation
population fertility
Echinochloa crus-galli
plant
Źródło:
Journal of Plant Protection Research; 2003, 43, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Do small-scale gaps in calcareous grassland swards facilitate seedling establishment?
Autorzy:
Baba, W
Kompala-Baba, A.
Powiązania:
https://bibliotekanauki.pl/articles/57390.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
generative reproduction
grassland
Polska
calcareous grassland
gap colonization
seedling
phenology
plant ecology
germination
Opis:
In this study we analyzed gaps originated in different seasons of the year vs. places of close vegetation in calcareous grasslands in terms of their suitability for seedling germination and establishment. Gaps, irrespective of the time of their origin, significantly promoted seedling emergence as compared with close swards. However, the season of gap creation influenced the rate of seedling germination/emergence. Seedlings occurred more frequently in autumn and spring gaps than in the summer ones. The highest mean number of seedlings and of their species were noted in autumn openings. However, the subsequent survival of seedlings in autumn gaps was low. On the contrary, in spring gaps juveniles occurred with the significantly highest mean number, frequency and species richness. The above results pointed to the positive, although very limited role of artificially created gaps as places favouring seedlings establishment.
Źródło:
Acta Societatis Botanicorum Poloniae; 2005, 74, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Large-scale vs. small-scale factors affecting flowering patterns in Senecio macrophyllus M.BIEB., a long-lived perennial
Wielkoskalowe i drobnoskalowe czynniki ksztaltujace wzorce kwitnienia u dlugowiecznej byliny, starca wielkolistnego Senecio macrophyllus M.BIEB.
Autorzy:
Czarnecka, B
Powiązania:
https://bibliotekanauki.pl/articles/28048.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
small-scale factor
large-scale factor
Senecio macrophyllus
long-lived herbaceous plant
flowering pattern
population
perennial plant
reproduction
Opis:
The aim of the study was to establish which of environmental factors affect flowering patterns in a long-lived herbaceous plant Senecio macrophyllus. The study was conducted in the population of Biała Góra (White Mountain) near Tomaszów Lubelski in the years 1989-2004. The results allow to conclude that in the reproductive patterns of the analysed population small-scale environmental factors (soil moisture and trophism, light intensity) are more important than large-scale climatic factors (temperature, precipitation), which to a comparable extent affect the plants in the whole population area.
Celem badań było określenie, które z czynników środowiskowych wpływają na kształtowanie się wzorców kwitnienia u długowiecznej rośliny zielnej Senecio macrophyllus. Badania prowadzono w populacji na Białej Górze koło Tomaszowa Lubelskiego w latach 1989-2004. Wyniki pozwalają na stwierdzenie, że w kształtowaniu się wzorców reprodukcji w badanej populacji większe znaczenie mają drobno- skalowe czynniki środowiskowe (wilgotność i trofizm gleby, natężenie światła) niż czynniki wielkoskalowe (temperatura, opady), które w porównywalny sposób oddziałują na rośliny w całym areale populacji.
Źródło:
Acta Agrobotanica; 2006, 59, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural regeneration of alien trees and shrubs at Rogow Arboretum od Warsaw University of Life Sciences
Naturalne odnawianie się obcych drzew i krzewów w Arboretum SGGW w Rogowie
Autorzy:
Banaszczak, P.
Tumilowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/888538.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Dendrologiczne
Tematy:
Rogow Arboretum
Warsaw University of Life Sciences-SGGW
alien plant
alien species
natural regeneration
natural reproduction
plant regeneration
shrub
tree
Opis:
The list of 46 self-sowing alien woody plant taxa in Rogów Arboretum is presented, which is an expantion of the list from 1992 when the first article on spontaneous regeneration of alien tree and shrub taxa in the Arboretum was published. Most of species described are rather infrequently found in Polish collections and are known to produce self-seedlings not capable of sexual reproduction, however Abies grandis can be included into group of plants that could produce seedlings capable of sexual reproduction.
Źródło:
Rocznik Polskiego Towarzystwa Dendrologicznego; 2009, 57
2080-4164
2300-8326
Pojawia się w:
Rocznik Polskiego Towarzystwa Dendrologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between chlorophenoxyacetic acid herbicides, indoleacetic acid and reproduction of cereal aphids on wheat
Autorzy:
Giebel, J
Woda-Lesniewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/66042.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reproduction
chlorophenoxyacetic acid
wheat
plant protection
Sitobion avenae
herbicide
cereal aphid
indoleacetic acid
phenolic compound
Rhopalosiphum padi
Opis:
Phenoxy acids significantly increased the number of Sitobion avenae F. and Rhopalosiphum padi L.on wheat treated with Aminopielik D and Illoxan 36 EC. This herbicidal effect could be caused directly by derivatives of phenoxy acid or indirectly by altered metabolism of wheat plant.
Mszyce zbożowe Sitobion avenae i Rhopalosiphum padi hodowano w warunkach laboratoryjnych na kłosach pszenicy jarej Banti traktowanej pochodnymi fenoksykwasów herbicydami: Aminopielik D i Illoxan 36 EC. Stwierdzono wyraźny wzrost liczebności mszyc na kłosach pszenicy traktowanej tymi herbicydami w porównaniu z kontrolą. Hodowano również mszycę zbożową Sitobion avenae na siewkach pszenicy w hydroponiku z kwasem cynamonowym (jako aktywatorem oksydazy IAA) oraz z mieszaniną roztworów IAA i kwasu cynamonowego. Kwas cynamonowy niwelował stymulujące rozwój mszyc działanie IAA. Kwasy fenoksyoctowe, jak i sama auksyna, stymulowały rozmnażanie się mszyc zbożowych, obecność natomiast inhibitorów (między innymi polifenoli) IAA-oksydazy może ograniczać rozkład auksyny nie tylko w roślinie, ale również w organizmie owada.
Źródło:
Journal of Plant Protection Research; 2001, 41, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New insights into the signaling and function of cytokinins in higher plants
Autorzy:
Ciesielska, A.
Ruszkowski, M.
Kasperska, A.
Femiak, I.
Michalski, Z.
Sikorski, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/81076.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
signal transduction
cytokinin
phytohormone
histidine
legume plant
symbiosis
organogenesis
cell division
elongation
differentiation
reproduction
sex determination
biotic stress
abiotic stress
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2012, 93, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-14 z 14

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