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Wyświetlanie 1-15 z 22
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:
Estimation of induced mutation rates of four esterase genes in barley [Hordeum vulgare L.]
Autorzy:
Kucharska, M
Maluszynski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2044884.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mutation frequency
isoenzyme
barley
hybrid
mutagen
enzyme system
plant morphology
mutant
Hordeum vulgare
esterase
estimation
seed
Opis:
Induced mutation rate of barley esterase loci has been estimated. Results suggested that about 3% of investigated M₁ spikes had seeds which gave rise to M₂ seedlings mutated in one of four esterase loci. M₁ plants were obtained after chemical treatment of seeds from two spring barley cultivars Aramir and Bielik. The majority of mutants were reconfirmed in the М₃ generation.
Źródło:
Journal of Applied Genetics; 1998, 39, 2; 141-145
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Geographic variation of Pinus heldreichii Christ from the Western Balkans based on cone and seed morphology
Autorzy:
Hodžić, M.M.
Hajrudinović-Bogunić, A.
Bogunić, F.
Marku, V.
Ballian, D.
Powiązania:
https://bibliotekanauki.pl/articles/2078154.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Bosnian pine
Dinaric Alps
Scardo-Pindic massif
morphometry
population differentiation
Opis:
Pinus heldreichii (Bosnian pine) is a Balkan-Apennine endemic and relict pine species that inhabits high mountains in the Mediterranean and sub-Mediterranean regions. Nineteen populations of P. heldreichii from the Western Balkans encompassing 187 individual trees were examined to evaluate morphological variation, a rarely studied aspect of the species. Univariate and multivariate statistics were applied in order to assess the variation of morphological traits of cones and seeds, evaluate the relationships among the sampled populations and verify geographic differentiation in the Dinaric Alps versus Scardo-Pindic mountains. The observations of P. heldreichii covering the populations from the western margins and the centre of the species distribution range indicated a morphological variation among populations and their geographic structure. In general, the southern populations (Scardo-Pindic group) had lower values for the most of morphological traits than the northern ones (Dinaric group). The observed geographic differences between these populations exhibit a north-western to south-eastern gradient, with a few inconsistencies. The southernmost sampled population, Tomorr in Albania, showed remarkable morphological divergence from the other studied populations and appeared to be a distinct morphological group. The pattern of morphological variation in Bosnian pine most likely resulted from multiple effects of long-term isolation and fragmentation in high mountain systems, adaptation to extreme environments and human disturbances.
Źródło:
Dendrobiology; 2020, 84; 81-93
1641-1307
Pojawia się w:
Dendrobiology
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:
Influence of some recessive genes on plant and inflorescence characteristics in alfalfa.
Autorzy:
Staszewski, Zygmunt
Bodzon, Zbigniew
Staszewski, Lucjan
Powiązania:
https://bibliotekanauki.pl/articles/2198829.pdf
Data publikacji:
2001-06-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Medicago sativa L.
alfalfa
long raceme – lp
top flowering – tf
branched raceme – br
inflorescence morphology
inheritance
seed setting
Opis:
The investigations of the effects of incorporation of some recessive genes into cv. Radius of alfalfa on seed productivity were performed in greenhouse and in field experiments. BC2 progenies were produced and compared to the standard cultivar Radius. Introduction of recessive genes lp (long raceme), tf (top flowering) and br (branched raceme) affected type of inflorescence: 1) the lp trait significantly increased floret and pod number per raceme, seed number per raceme and seed weight per sq. m., 2) the tf trait increased significantly number of raceme per stem and seed yield per sq. m., 3) the branched raceme trait governed by a single recessive gene br enhanced 6 – 10 times floret number per raceme.
Źródło:
Plant Breeding and Seed Science; 2001, 45, 1; 43-53
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morfologia i plonowanie odmian rzepaku jarego w zaleznosci od stosowanych herbicydow
Plant morphology and yielding of spring rape cultivars depending on applied herbicides
Autorzy:
Adomas, B
Murawa, D.
Powiązania:
https://bibliotekanauki.pl/articles/833264.pdf
Data publikacji:
2005
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
uprawa roslin
rzepak jary
odmiany roslin
rzepak Star
rzepak Lisonne
nasiona
doswiadczenia polowe
morfologia roslin
herbicydy
zastosowanie
plonowanie
plant cultivation
spring rape
plant cultivar
Star cultivar
Lisonne cultivar
seed
field experiment
plant morphology
herbicide
application
yielding
Źródło:
Rośliny Oleiste - Oilseed Crops; 2005, 26, 2; 369-385
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morfologia rozety a zimotrwałość i plenność rodów hodowlanych rzepaku ozimego podwójnie ulepszonego
Rosette morphology and winterhardiness or seed yield of double low strains of winter oilseed rape (Brassica napus L.)
Autorzy:
Wawrzyniak, M.
Pietka, T.
Krotka, K.
Powiązania:
https://bibliotekanauki.pl/articles/832737.pdf
Data publikacji:
1998
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Źródło:
Rośliny Oleiste - Oilseed Crops; 1998, 19, 2
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
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:
Morphology of strobili at different development positions and cone and seed characteristics of Pinus densiflora f. multicaulis
Autorzy:
Kwon, S.H.
Kim, Y.G.
Kang, H.I.
Shim, D.
Kang, K.S.
Powiązania:
https://bibliotekanauki.pl/articles/2078259.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
bisexual strobili
sex reversal
microsporangia
megasporangia
cone analysis
Opis:
Pinus densiflora f. multicaulis is a rare and unusual form of genus Pinus. It has excellent ornamen- tal values due to many trunks from its root collar, and produces female, male, and bisexual strobili on the same tree. However, there is limited study whether the bisexual strobili are functional, mature lateral cones produce filled seeds, and the seeds from the mature lateral cones germinate and grow as well as those from mature apical cones. The structure of apical female, and lateral male and bisexual strobili were analyzed in an open-pollination-progeny population. The strobili were photographed to obtain external, cross-section, and radial-section images using a 45× stereoscopic microscope. Radial sections of strobili were imaged using scanning electron microscopy. Characteristics of apical and lateral cones and seeds were surveyed by cone analysis and germination test. P. densiflora f. multicaulis developed typical female strobili apically, and ordinary male and bisexual strobili laterally. Additionally, female strobili developed laterally whereas the male strobili were normally located. The mature lateral female strobili had the same structure as the apical female. In the mature bisexual strobili, the proportion of male and female tissue was unequal. The cones developed from lateral female strobili showed highly significant differences in the length, width, and weight, being shorter (32.7%), narrower (26.9%), and lighter (59.8%) than those from apical female strobili. Both types produced filled seeds and seedlings, and well significant positive correlations were found among characteristics of seeds from apical and lateral female strobili. The initial seed germination rate of the seeds from apical female strobili was higher than that of seeds from lateral female strobili, but the difference decreased over time. The viability and spatial distribution of the female and male tissue of bisporangiate cones, and their frequent occurrence suggests a common mechanism for the production of bisporangiate structures in seed plants.
Źródło:
Dendrobiology; 2021, 85; 51-59
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zdrowotna nasion z wiesiolka
Assessment of therapeutic value of evening primrose
Autorzy:
Szczesna, M
Powiązania:
https://bibliotekanauki.pl/articles/876531.pdf
Data publikacji:
1993
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
wiesiolek dziwny
rosliny lecznicze
Oenothera biennis
sklad chemiczny
wlasciwosci lecznicze
morfologia roslin
leczenie
wiesiolek slaski
aktywnosc biologiczna
Oenothera rubricaulis
wiesiolek wierzbolistny
choroby czlowieka
nasiona
oleje roslinne
wiesiolek
Oenothera paradoxa
Oenothera
wiesiolek czerwonolodygowy
Oenothera silesiaca
wiesiolek dwuletni
Oenothera salicifolia
evening primrose
medicinal plant
chemical composition
medicinal property
plant morphology
therapy
biological activity
human disease
seed
plant oil
Opis:
Przedstawiono skład chemiczny nasion wiesiołka i zawartego w nich oleju, działanie lecznicze preparatów z wiesiołka oraz kryteria jakości zdrowotnej nasion.
In the light of a survey of literature data the chemical composition of described of evening primrose seeds and of the oil obtained from them which has a high content of unsaturated fatty acids, mainly linolic and gamma-linolenic acid. The therapeutic value of the preparations of evening primrose and their effect on the metabolism are discussed. The criteria of the therapeutic quality of the seeds are given.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1993, 44, 2-3; 139-146
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seed morphology and testa sculptures of some Allium L. species (Alliaceae)
Morfologia i skulptura powierzchni nasion wybranych gatunków rodzaju Allium L. (Alliaceae)
Autorzy:
Bednorz, L.
Krzyminska, A.
Czarna, A.
Powiązania:
https://bibliotekanauki.pl/articles/27233.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant species
Allium pyrenaicum
Allium rotundum
Allium sphaerocephalon
Allium vineale
Allium moly
Allium karataviense
Allium fistulosum
Allium nutans
Alliaceae
seed
seed morphology
testa sculpture
taxonomy
Opis:
The paper presents the results of the study on seed morphology of eight following Allium species: A. pyrenaicum Costa & Vayr., A. rotundum L., A. sphaerocephalon L., A. vineale L., A. moly L., A. karataviense Regel, A. fistulosum L. and A. nutans L. The study confirmed the substantial diversity in testa characters, especially curvature and relief of anticlinal walls as well as microsculpture of outer periclinal walls. The occurrence of raised anticlinal walls – an unusually rare feature in Allium seeds, previously observed only in a few species, was found in A. karataviense. It was also found that the testa type in A. pyrenaicum did not match the typical character combination, described before for subg. Allium sect. Allium.
W pracy przedstawiono wyniki badań nad morfologią nasion ośmiu następujących gatunków rodzaju Allium: A. pyrenaicum Costa & Vayr., A. rotundum L., A. sphaerocephalon L., A. vineale L., A. moly L., A. karataviense Regel, A. fistulosum L. i A. nutans L. Obserwacje wykonano z zastosowaniem elektronowego mikroskopu skaningowego (SEM) oraz mikroskopu stereoskopowego. Przeprowadzone badania potwierdziły znaczne zróżnicowanie cech powierzchni nasion czosnków, a w szczególności przebiegu i reliefu ścian antyklinalnych oraz mikro-urzeźbienia zewnętrznych ścian peryklinalnych komórek testy. U A. karataviense stwierdzono występowanie wypukłych ścian antyklinalnych komórek testy – cechy niezwykle rzadko spotykanej u czosnków, wcześniej zaobserwowanej zaledwie u kilku gatunków. Stwierdzono również, że typ skulptury nasion A. pyrenaicum nie odpowiada typowej kombinacji cech komórek testy, opisanej wcześniej u innych gatunków podrodzaju Allium sekcji Allium.
Źródło:
Acta Agrobotanica; 2011, 64, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seed plant characteristics of monogerm and multigerm red beet
Autorzy:
Jagosz, B.
Powiązania:
https://bibliotekanauki.pl/articles/61022.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
seed morphology
germination
hybrid
seed production
red beet
Beta vulgaris
breeding line
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2015, IV/3
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
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
Wyświetlanie 1-15 z 22

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