Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "embryogenesis" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 61
Tytuł:
Isolation and preliminary sequence characterization of beta-amylase gene promoters in rye [Secale cereale L.]
Autorzy:
Sadowski, J
Rorat, T
Cooke, R
Delseny, M
Powiązania:
https://bibliotekanauki.pl/articles/2046684.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
beta-amylase
rye
gene promoter
homology
amino acid
DNA cloning
prolamin
Secale cereale
mRNA
embryogenesis
endosperm
cDNA
inverse polymerase chain reaction
Opis:
The isolation of rye ß-Amy1 and ß-Amy2 gene promoters from nuclear DNA using the inverse polymerase chain reaction (IPCR) technique and characterization of their sequences are presented. The conservation of ß-amylasc coding sequences allowed for simultaneous IPCR amplification of two different promoters with primers designed on the basis of the single known cDNA sequence. Two ß-amylasc gene promoters display a low sequence similarity (47%). Beside consensus TATA and CCAAT boxes, other sequence motives common to both promoters were found. In addition, the homology of amino acid sequences of plant ß-amylases available in the database is discussed.
Źródło:
Journal of Applied Genetics; 1997, 38, 3; 241-251
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Activity of respiratory enzymes in embryogenesis of Toxocara canis
Autorzy:
Kolodziejczyk, L.
Powiązania:
https://bibliotekanauki.pl/articles/836286.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
red fox
parasite
respiratory enzyme
carnivorous mammal
enzyme
dog
embryogenesis
Toxocara canis
fox
egg
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Types of vitellocytes and vitellogenesis in the Cestoda in relation to different types of embryonic development, ovoviviparity and life cycles
Autorzy:
Swiderski, Z.
Xylander, W.E.R.
Powiązania:
https://bibliotekanauki.pl/articles/839318.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Cestoda
life cycle
ovoviviparity
embryogenesis
vitellogenesis
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efektywnosc embriogenezy somatycznej w kulturze in vitro lnianki siewnej [Camelina sativa L.]
Autorzy:
Zandecka-Dziubak, J
Luczkiewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/832655.pdf
Data publikacji:
2000
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Camelina sativa
kultury in vitro
zarodki somatyczne
embriogeneza somatyczna
lnicznik siewny
in vitro culture
somatic embryo
somatic embryogenesis
false flax
Źródło:
Rośliny Oleiste - Oilseed Crops; 2000, 21, 2; 615-620
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytoembryological studies on eastern galega (Galega orientalis Lam.) - a new papilionaceous plant.
Autorzy:
Danuta, Packa
Powiązania:
https://bibliotekanauki.pl/articles/2198819.pdf
Data publikacji:
2001-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
embryogenesis
microsporogenesis
pollen development
eastern galega
fodder galega
eastern goat’s rue
Galega orientalis Lam.
Opis:
Embryogenesis, microsporogenesis and pollen development in eastern galega (Galega orientalis Lam.) have been analysed. Generally, the embryogenesis in eastern galega is similar to that of goat’s rue (Galega officinalis L.). It is typical for eastern galega to form linear proembryos to the phase of 8 or 9 cells. The proper embryo develops from apical cells of the proembryo, while the remaining cells form the suspensor. The embryo of eastern galega typically forms a long, massive suspensor consisting of several irregular rows of cells on the side of the proper embryo and one large cell on the side of the micropyle. Suspensors were preserved in developing seeds possessing embryos with elongated cotyledons and a massive hypocotyl. In the initial phase of embryogenesis the endosperm is of a nuclear type. The transformation of the nuclear into cellular type of endosperm begins at the heartlike embryo phase and proceeds from the micropylar to chalazal end. Observations on the embryogenesis in eastern galega revealed the presence of degenerating ovules. Causes of degeneration were not analysed.Meiotic division in PMCs leads to the formation of microspore tetrads via simultaneous cytokinesis. Mature pollen grains are two-celled with well-formed sporoderm and three germ pores through which pollen tube can emerge.
Źródło:
Plant Breeding and Seed Science; 2001, 45, 2; 87-98
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conifer somatic embryogenesis: I. Development
Autorzy:
Klimaszewska, K
Cyr, D.R.
Powiązania:
https://bibliotekanauki.pl/articles/41304.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
somatic seedling
initiation
development
somatic embryogenesis
Pinaceae
maturation
embryogenesis
conifer species
forest industry
forest
somatic tree
cryopreservation
Opis:
The discovery of conifer somatic embryogenesis (SE) and the subsequent development of SE protocols for a range of genera and species have opened new research opportunities to forest biotechnologists and a means towards mass clonal propagation for the forest industry. This paper provides a general description of the conifer SE process, followed by a review of protocols developed specifically for several conifer species in the Pinaceae family for which production of somatic trees has been demonstrated. Additionally, future research needs, including approaches for developing markers to optimize SE process and the production of high quality embryos, are discussed.
Źródło:
Dendrobiology; 2002, 48
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conifer somatic embryogenesis: II. Applications
Autorzy:
Cyr, D R
Klimaszewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/41451.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
plantation forestry
somatic seedling
application
somatic embryogenesis
Pinaceae
embryogenesis
germplasm preservation
clonal propagation
Opis:
Somatic embryogenesis (SE) of conifers for clonal propagation has emerged from its earliest beginnings in 1980 to become an integral component of tree improvement strategies. With its capacity for long-term germplasm preservation and scale-up technologies,it is seen to be the preferred avenue to accelerate selection and operational deployment of value-added genotypes. At present,programs for numerous species from the Pinaceae family are underway worldwide,with activities ranging from selection trials to pilot production for plantation forestry. This paper will provide a review of current efforts in conifer SE including cryopreservation,commercialization and deployment strategies,and transgenics. A discussion of challenges and issues is directed at genetic fidelity, intellectual property and future needs.
Źródło:
Dendrobiology; 2002, 48
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects thidiazuron and paclobutrazol on regeneration potential of tulip flower stalk explants in vitro and subsequent shoot multiplication
Autorzy:
Podwyszynska, M
Marasek, A.
Powiązania:
https://bibliotekanauki.pl/articles/58430.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
flower
micropropagation
somatic embryogenesis
tulip
paclobutrazol
thidiazuron
regeneration
new cultivar
modern breeding
in vitro
tulip cultivar
shoot multiplication
Opis:
The effects of TDZ and paclobutrazol on the primary regeneration on tulip flower stalk explants of six cultivars and subsequent shoot multiplication were examined. Explants, flower stalk slices, were excised from cooled and subsequently forced bulbs. The explants were incubated for two months in darkness on medium containing NAA and cytokinins, 2iP and BAP, as control, or TDZ (0.5-4 mg l-1) and paclobutrazol (0.05-0.4 mg l-1). Then, the regenerating explants were subcultured on medium with TDZ and NAA applied at low concentrations. Different regeneration capabilities were found depending on cultivar and growth regulators. The percentage of explants forming leaf-like structures ranged, on the control medium, from 80% in 'Blue Parrot' and 'Prominence' to below 30% in 'Apeldoorn' and 'Mirjoran'. TDZ, applied at optimum for each cultivar concentration, greatly increased the regeneration potential up to 70-100%. Paclobutrazol, added to the TDZ-containing medium, significantly enhanced the response of explants, resulting in high numbers of leaf-like structures formed per explant (13.7-22.8). The structures developed gradually into characteristic forms: the growing up cotyledonary leaf, the probable root primordium formed at its base, the growing downwards stolon and the shoot meristem developed finely on its tip. It is suggested that such primary regeneration may have a nature of somatic embryogenesis. Then, the adventitious shoots developed and formed clusters, which were divided into 2-3 smaller ones every two months. The growth regulators, used at initial stage, markedly influenced subsequent shoot multiplication. Thus, the most intensive shoot formation was noted with TDZ at concentrations of 0.5-2 mg l-1 and paclobutrazol of 0.05-0.1 mg l-1.
Źródło:
Acta Societatis Botanicorum Poloniae; 2003, 72, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Induction of somatic embryogenesis in spruce: Picea omorika, P. pungens "Glauca", P. breweriana and P. abies
Autorzy:
Hazubska, T
Szczygiel, K.
Powiązania:
https://bibliotekanauki.pl/articles/41201.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
Picea pungens
Serbian spruce
Picea abies
blue spruce
Picea omorika
clonal propagation
spruce
somatic embryogenesis
maturation
embryogenesis
Picea breweriana
somatic embryo
Opis:
The studies were carried out on seed explants (mature zygotic embryos) of four spruce species: Picea omorika (Pancić) Purk., P. pungens ‘Glauca' Beisnn., P. breweriana S. Watson and P. abies (L.) Karst. The explants required darkness during the induction of embryogenic tissue. Temporary exposure of explants to light did not increase their embryogenic capacity. It was observed that the temperature of 25°C was the optimal for embryogenic tissue induction from mature zygotic embryos of Picea omorika. Cold treatment at 4°C during one week improved embryogenic tissue initiation in the explants of P. pungens ‘Glauca'. Seed explants of Picea omorika produced embryogenic tissue on medium lacking glutamine. Only explants of Picea abies and P. omorika showed embryogenic tissue formation. For effective proliferation of embryogenic tissue in Picea abies and P. omorika it was necessary to supply the medium with 2,4-D (4.5-9 μM) and BA (2.25 μM). Two of three analized lines showed that ABA promote somatic embryo maturation, at the ABA concentration 20 μM in the medium.
Źródło:
Dendrobiology; 2003, 50
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cleavage in Ixodes ricinus [L.] [Acari: Ixodidae]
Autorzy:
Jasik, K
Powiązania:
https://bibliotekanauki.pl/articles/839025.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Ixodidae
embryonic development
Acari
parasitology
karyomere
embryogenesis
cleavage
Ixodes ricinus
mechanism
tick
pathogen transmission
Opis:
The author analyzed the first 5 days of embryonic development of Ixodes ricinus. The cleavage takes 4 days, being terminated on the 5th day of embryogenesis, when the cells start to invaginate and differentiate. The karyomeres play a role in the initial mitotic divisions. Cellularization occurs on the 2nd and 3rd day of embryogenesis. The blastoderm cells maintain their potential for division, and as from the 5th day cellular differentiation starts.
Źródło:
Annals of Parasitology; 2006, 52, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cleavage in Ixodes ricinus [L.] [Acari: Ixodidae]
Autorzy:
Jasik, K.
Powiązania:
https://bibliotekanauki.pl/articles/2146342.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Ixodidae
embryonic development
Acari
parasitology
karyomere
embryogenesis
cleavage
Ixodes ricinus
mechanism
tick
pathogen transmission
Opis:
The author analyzed the first 5 days of embryonic development of Ixodes ricinus. The cleavage takes 4 days, being terminated on the 5th day of embryogenesis, when the cells start to invaginate and differentiate. The karyomeres play a role in the initial mitotic divisions. Cellularization occurs on the 2nd and 3rd day of embryogenesis. The blastoderm cells maintain their potential for division, and as from the 5th day cellular differentiation starts.
Źródło:
Wiadomości Parazytologiczne; 2006, 52, 4; 291-297
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatic embryogenesis of selected coniferous tree species of the genera Picea, Abies and Larix
Autorzy:
Szczygiel, K
Hazubska-Przybyl, T.
Bojarczuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/57833.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Abies
micropropagation
ex vitro
development
larch
tree species
spruce
in vitro
botany
Picea
medium
embryogenesis
Larix
fir
hormone
Opis:
Experiments on somatic embryogenesis in selected spruce, fir and larch species were performed to determine if this method of micropropagation enables production of quality seedlings for forest nurseries. High frequencies of embryogenic callus in spruce (23-31%) and fir (29%) were achieved when mature zygotic embryos were used as explants, while in larches (36%) only when megagametophytes (endosperms with immature embryos) were used. The possibility of somatic embryogenesis initiation also from somatic embryos (resulting in secondary and third generation of embryogenic callus) indicate high efficiency of this method of micropropagation. The best results at all stages of somatic embryogenesis (good proliferation of embryogenic callus, high rate of embryo regeneration and their survival) were obtained for Norway spruce, European larch and some hybrid larches.
Źródło:
Acta Societatis Botanicorum Poloniae; 2007, 76, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Embryogenic callus induction and differentiation in silver fir (Abies alba Mill.) tissue cultures
Autorzy:
Nawrot-Chorabik, K
Powiązania:
https://bibliotekanauki.pl/articles/41643.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
silver fir
Abies alba
tissue culture
embryogenic suspensor mass
somatic embryogenesis
callus induction
differentiation
Opis:
The research was conducted on explants of silver fir (Abies alba Mill.) deriving from several forest districts in southern Poland. The study encompassed the influence of the origin of plant material, type of explants, kind of substances used for explants sterilization, PPM and the type of medium on the ability to form embryogenic callus and to develop somatic embryos in silver fir explants. From the plant material collected in three sites, 57 clones were obtained from mature zygotic embryos; this produced an embryogenesis frequency of 6%. Embryogenic callus was obtained with a diameter of 65–70 mm depending on the material origin. The best medium for development of callus inducted on embryos isolated from mature silver fir seeds was the SH medium. Somatic embryos were formed in a globular stadium (24 pieces) on this medium. The 10% solution of NaOCl (used for 15 minutes) turned out to be the most effective substance for seed sterilization.
Źródło:
Dendrobiology; 2008, 59; 31-40
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatic embryogenesis of selected spruce species [Picea abies, P. omorika, P. pungens 'Glauca' and P. breweriana]
Autorzy:
Hazubska-Przybyl, T
Bojarczuk, K.
Powiązania:
https://bibliotekanauki.pl/articles/56682.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
somatic embryogenesis
spruce species
Picea abies
Picea omorika
Picea pungens
Picea breweriana
plant tissue
growth regulator
somatic embryo
nursery production
Opis:
Somatic embryogenesis was studied in four spruce species (Picea abies, P. omorika, P. pungens 'Glauca' and P. brewenana) to determine if this method can be used for in vitro propagation of coniferous trees. The highest frequency of initiation of embryogenic tissue was obtained when mature zygotic embryos were used as explants. It ranged then from 10.8% (P. brewenana) to 23.75% (P. omorika and P. pungens 'Glauca'). The frequency of embryogenic tissue initiation was strongly affected by medium composition, i.e. addition of appropriate auxins (2,4-D, NAA, Picloram) and sucrose concentration (10-20 g-1"1). A lower frequency was obtained in Picea omorika (10%) when megagametophytes (endosperms with immature zygotic embryos) were used as explants. No emryogenic tissue was produced from hypocotyls, cotyledons and needles. A satisfactory frequency was achieved with the use of somatic embryos of Picea abies (30%). The proliferation of embryogenic cell lines of spruces was affected by medium type. The experiments resulted in production of somatic plantlets of P. abies and P. omorika. This enables the application of this method of spruce micropropagation for genetic and breeding research or for nursery production.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 3; 189-199
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morfomechaniczne zmiany jaj raka szlachetnego (Astacus astacus L.) w trakcie embriogenezy
Morphomechanical changes in eggs of the noble crayfish (Astacus astacus L.) during embryogenesis
Autorzy:
Pawlos, D.
Korzelecka-Orkisz, A.
Wesołowski, P.
Formicki, K.
Powiązania:
https://bibliotekanauki.pl/articles/339262.pdf
Data publikacji:
2010
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Astacus astacus
jaja
rozwój embrionalny
zarodki
zmiany morfomechaniczne
eggs
embryo
embryogenesis
morphomechanical changes
Opis:
Stale wzrastające zanieczyszczanie środowiska oraz presja obcych gatunków raków, a przede wszystkim wyniszczenie przez dżumę raczą, spowodowało znaczne ograniczenie występowania stanowisk raka szlachetnego (Astacus astacus L.) w Polsce. Lepsze poznanie biologii rozrodu i embriogenezy tego gatunku raka jest konieczne nie tylko do jego ochrony przed wyginięciem, ale również poprawy warunków chowu i hodowli. Rozwój zarodkowy raka szlachetnego w warunkach średniej temperatury 8 ± 2°C trwał 2100 D°. Podział żółtka przebiegał w bardzo wolnym tempie i kończył się dopiero po upływie 352 D°. Pierwsze półkoliste zawiązki zarodka zaobserwowano w 592 D°. Zamykanie się blastoporu nastąpiło w 928 D°. W 1200 D° zarodek przybrał postać naupliusa. Na tym etapie widoczne były przydatki: anteny I i II pary oraz żuwaczki. Około 1500 D° serce podjęło pracę. Na krótko przed wylęgiem (1800 D°) pojawił się w oczach pigment, zaś na powierzchni zarodka zaobserwowano równomierne rozmieszczenie komórek barwnikowych. Po przeanalizowaniu zmian morfometrycznych jaj raka szlachetnego stwierdzono, że objętość w trakcie embriogenezy zwiększała się z 9,26 ± 0,44 mm³ do 13,5 ± 0,44 mm³ na krótko przed wylęgiem. Pomiary wytrzymałości mechanicznej osłonek jajowych ujawniły, że była ona dość znaczna na początku embriogenezy (ponad 150 ± 20,2 g) i zmniejszała się w trakcie rozwoju embrionalnego do wartości 83,5 ± 7,1 g w chwili wylęgu. Współczynnik S/V na początku rozwoju zarodkowego wynosił 2,291 i w miarę trwania embriogenezy zmniejszał się do 2,017.
Constantly increasing pollution of the environment, invasive species, and a great harm caused by the plague (Aphanomyces astaci) contributed to a significant decrease of the noble crayfish (Astacus astacus) in Poland. Expanding the knowledge of the biology, reproduction and embryogenesis of the noble crayfish is necessary not only for its conservation, but also to improve its farming. Our study shows that embryogenesis of the noble crayfish at an average temperature of 8 ± 2°C lasted 2100 D°. The partition of the vitellus showed a rather slow rate and ended after 352 D°. First semicircular germs of the embryo were observed at 592 D°. Blastopore closed off at 928 D°. At 1200 D° embryo assumed the shape of nauplius, and at this stage the antennae of I, II pair and mandibles were visible. At about 1500 D° the heart became active. Shortly prior to hatching (1800 D°) eyes were pigmented, while steady distribution of pigment cell was observed on the surface of the embryo. After the analysis of morpho-mechanical changes in eggs of the noble crayfish, we found that the volume of eggs in the course of embryogenesis increased from 9.26 ± 0.44 mm³ to 13.5 ± 0.44 mm³ just shortly prior to hatching. Mechanical resistance of egg membrane to applied pressure was considerable - 150.0 ± 20.2 g at the beginning of embryogenesis, and dropped at hatching to 83.5 ± 7.1 g. The S/V coefficient at the beginning of embryonic development was 2.291 and decreased during embryogenesis to 2.017.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2010, 10, 3; 201-214
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 61

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies