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Wyszukujesz frazę "seed morphology" wg kryterium: Wszystkie pola


Wyświetlanie 1-9 z 9
Tytuł:
Fruit and seed morphology of the genus Heracleum L. (Apiaceae) in Poland
Autorzy:
Klimko, M.
Truchan, M.
Wysakowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/878295.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
fruit morphology
seed morphology
trichome
morphology
Heracleum
Heracleum sosnowskyi
Heracleum mantegazzianum
Heracleum sphondylium
Apiaceae
Polska
Opis:
The paper presents the results of a study on mericarps and seed morphology of four taxa occurring in Poland: Heracleum sphondylium subsp. sphondylium and subsp. sibiricum, H. mantegazzianum and H. sosnowskyi. Apart from selected biometric traits we analysed pericarps and seed-coat patterns using a stereoscopic microscope (SM) and a scanning microscope (SEM). Considerable diff erences in the dorsal surface of mericarps were observed, but major structural similarities were found on the ventral surface of mericarps. Pericarp surface diff ers signifi cantly between native and alien taxa in terms of secondary sculpture. The examined seeds were characterised by reticulate primary sculpture with diff erent size and shape of testa cells. The macro- and micromorphological characteristics of the mericarp and seeds may provide valuable additional diagnostic criteria for delimitation of Heracleum and can be used in the identifi cation of fruits and seeds.
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2013, 17
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variation of seed morphology of Trollius europaeus L. and Trollius altissimus Crantz [Ranunculaceae]
Autorzy:
Antkowiak, W
Maciejewska-Rutkowska, I.
Jagodzinski, A.M.
Kayzer, D.
Klimko, M.
Powiązania:
https://bibliotekanauki.pl/articles/57408.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
variation
seed
morphology
Trollius europaeus
Trollius altissimus
Ranunculaceae
Opis:
The aim of this study was to investigate seed morphology and intra- and inter-population variation of seeds of Trollius europaeus L. and Trollius altissimus Crantz., two controversial species regarding their taxonomical position. We analyzed seed-coat microsculpture and some biometrical traits (length and width, width/length ratio, volume and projected perimeter). Seed sculpture did not differ between species, but seeds of T. altissimus were usually larger than seeds of T. europaeus. Although species differed significantly in seed morphology, it was possible to show the populations of both species that were similar regarding the analyzed seed traits. We noted a significant inter-population differentiation of seeds in both species with respect to seed-coat microornamentation and biometrical traits. We conclude that T. europaeus and T. altissimus are probably not two distinct species, but T. europaeus should be divided into two lower taxa in the rank of variety or subspecies.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 2; 117-123
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Taraxacum scanicum Dahlst. group [section Erythrosperma] in Poland: chorology and seed and pollen morphology of the microspecies
Autorzy:
Marciniuk, J
Vasut, R.J.
Marciniuk, P.
Czarna, A.
Powiązania:
https://bibliotekanauki.pl/articles/57021.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
geographic distribution
Polska
morphology
pollen
seed
chorology
Taraxacum scanicum
dandelion
Opis:
The genus Taraxacum is taxonomically complicated due to apomixis. Therefore, there are significant differences in knowledge of regional Taraxacum-Floras among European countries. Similarly, some taxa are well characterised with well-known distribution, whereas some ones are known e.g. from a single locality. Taraxacum scanicum of section Erythrosperma is one of the most common microspecies of this section in Europe. Recently, this taxon was split into three microspecies. In this study we map the distribution of three described taxa of this group in Poland, i.e. T. scanicum s.s., T. prunicolor and T. cristatum. The survey showed that T. scanicum has a similar distribution as T. prunicolor in Poland. This is in contrast with the hitherto known distribution of both taxa. T. cristatum was found at a single locality that is quite distant from the distribution in southern central Europe. We also provide with new morphological characteristics of achenes and pollen for T. scanicum s.s. and T. prunicolor.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 2; 115-121
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some notes on the morphology and anatomy of seeds of two similar heathers, Erica carnea L. and Erica erigena R. Ross
Autorzy:
Szkudlarz, P
Powiązania:
https://bibliotekanauki.pl/articles/41127.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
morphology
anatomy
seed
heather
Erica carnea
Erica erigena
species identification
Erica herbacea zob.Erica carnea
Erica mediterranea zob.Erica erigena
seed coat
epidermal cell
Opis:
This paper presents the results of comparative studies on seed morphology and anatomy of two species: Erica carnea and E. erigena. SEM and LM micrographs are presented. The seeds differ in size and shape of epidermal cells of the seed coat, but they represent the same structural type, which is clearly dissimilar from that of the other European species of this genus.
Źródło:
Dendrobiology; 2008, 59; 51-55
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SEM and stereoscope microscope observations on the seeds of the Polish species of the genus Sorbus L. [Rosaceae]
Autorzy:
Maciejewska-Rutkowska, I
Bednorz, L.
Powiązania:
https://bibliotekanauki.pl/articles/57855.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Rosaceae
Sorbus
botany
morphology
stereoscope microscope
scanning microscope
seed
Opis:
This paper presents the results of the study on seed morphology of five Polish species of the genus Sorbus L. (S. aria (L.) Crantz, S. aucuparia L. Emend. Hedl., S. chamaemespilus (L.) Crantz, S. intermedia (Ehrh.) Pers. and S. torminalis (L.) Crantz). Observations and measurements were carried out with stereoscope and scanning microscopes. Four types of seed microsculpture were distinguished on the ground of SEM observations. The key to determine Polish species, based on morphological characters of seeds is given too.
Źródło:
Acta Societatis Botanicorum Poloniae; 2004, 73, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of environmental changes on physiology and development of polar vascular plant
Autorzy:
Gielwanowska, I.
Pastorczyk, M.
Kellmann-Sopyla, W.
Powiązania:
https://bibliotekanauki.pl/articles/11964.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environment change
plant physiology
plant development
polar plant
vascular plant
Caryophyllaceae
Poaceae
morphology
plant morphology
ultrastructure
organelle
stress reaction
seed development
Arctic
Antarctic
Opis:
Polar vascular plants native to the Arctic and the Antarctic geobotanical zone have been growing and reproducing effectively under difficult environmental conditions, colonizing frozen ground areas formerly covered by ice. Our macroscopic observations and microscopic studies conducted by means of a light microscope (LM) and transmission electron microscope (TEM) concerning the anatomical and ultrastructural observations of vegetative and generative tissue in Cerastium arcticum, Colobanthus quitensis, Silene involucrata, plants from Caryophyllaceae and Deschampsia antarctica, Poa annua and Poa arctica, from Poaceae family. In the studies, special attention was paid to plants coming from diversity habitats where stress factors operated with clearly different intensity. In all examinations plants, differences in anatomy were considerable. In Deschampsia antarctica the adaxial epidermis of hairgrass leaves from a humid microhabitat, bulliform cells differentiated. Mesophyll was composed of cells of irregular shapes and resembled aerenchyma. The ultrastructural observations of mesophyll in all plants showed tight adherence of chloroplasts, mitochondria and peroxisomes, surface deformations of these organelles and formation of characteristic outgrowths and pocket concavities filled with cytoplasm with vesicles and organelles by chloroplasts. In reproduction biology of examined Caryophyllaceae and Poaceae plants growing in natural conditions, in the Arctic and in the Antarctic, and in a greenhouse in Olsztyn showed that this plant develops two types of bisexual flowers. Almost all ovules developed and formed seeds with a completely differentiated embryo both under natural conditions in the Arctic and the Antarctic and in a greenhouse in Olsztyn.
Źródło:
Papers on Global Change; 2011, 18
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytogenetic markers of Brassica napus L. chromosomes
Autorzy:
Hasterok, R
Maluszynska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2043142.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
oil seed
in situ
silver staining
chromosome number
morphology
molecular cytogenetics
in vitro
karyotype
rDNA
morphometric analysis
plant breeding
oilseed rape
Brassica napus
somatic hybridization
transformation
cytogenetic marker
fluorescence
hybridization
genomic origin
Źródło:
Journal of Applied Genetics; 2000, 41, 1; 1-9
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological and anatomical structure of generative organs of Salsola kali ssp. ruthenica [Iljin] Soo at the SEM level
Autorzy:
Idzikowska, K
Powiązania:
https://bibliotekanauki.pl/articles/58452.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
flower
pistil
structure
scanning electron microscopy
generative organ
morphology
flower part
fruit
seed
stamen
anatomy
semi-section
light microscopy
Salsola kali ssp.ruthenica
sepal
Chenopodiaceae
embryo
Opis:
The morphology and anatomy of generative organs of Salsola kali ssp. ruthenica was examined in detail using the light (LM) and scanning electron microscopy (SEM). The whole flowers, fruits and their parts (pistil, stamens, sepals, embryo, seed) were observed in different developmental stages. In the first stage (June), flower buds were closed. In the second stage (August), flowers were ready for pollination/fertilization. In the third stage (September), fruits were mature. Additionally, the anatomical and morphological structure of sepals was observed by means of LM and SEM. Thanks to the transverse and longitudinal semi-sections through sepals, the first phase of wing formation was recorded by SEM. The appearance of stomata in the epidermal cells of sepals above the forming wings was very interesting, too. The stomata were observed also in mature fruits.
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:
Wplyw gestosci wysiewu rzepaku jarego na ulistnienie roslin i lanu, plon nasion, cechy morfologiczne oraz zawartosc kwasow tluszczowych w oleju
Autorzy:
Zajac, T
Borowiec, F.
Gierdziewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/833062.pdf
Data publikacji:
2003
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
rosliny oleiste
nasiona
kwasy tluszczowe
plony
morfologia
oleje
ulistnienie
gestosc siewu
rzepak jary
oil plant
seed
fatty acid
yield
morphology
oil
foliage
sowing density
spring rape
Źródło:
Rośliny Oleiste - Oilseed Crops; 2003, 24, 2; 423-441
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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