Temat: wheat plant - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Anther culture response in F1 hybrids of winter wheat [Triticum aestivum L.]
Autorzy:: Ponitka, A
Slusarkiewicz-Jarzina, A
Powiązania:: https://bibliotekanauki.pl/articles/2047258.pdf
Data publikacji:: 1996
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: haploid production
plant regeneration
F1 hybrid
green plant
cold treatment
albino plant
wheat
anther structure
hybrid
Triticum aestivum
winter wheat
somatic embryo
Opis:: The effect of cold pretreatment of spikes on somatic embryo induction and anther culture response of 25 F₁ winter wheat hybrids was investigated. The efficiency of androgenic embryos was the highest when spikes were incubated at 4°C for 6-9 days. A total of 2242 (73.0%) green and 885 (27.0%) albino plants were obtained from 9900 cultured anthers. Anther culture response in wheat was found to be markedly affected by the genotype of donor plants. The percentage of green plants varied from 0 to 115.7%. A great majority of anther-derived regenerants were haploids (82.35%), while the remaining plants were spontanoeus diploids (13.73%) and aneuploids (3.92%).
Źródło:: Journal of Applied Genetics; 1996, 37, 3; 253-260
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Somaclonal variation in winter wheat [Triticum aestivum L.]: frequency, occurrence and inheritance
Autorzy:: Cheng, X Y
Gao, M.W.
Liang, Z.Q.
Liu, G.Z.
Powiązania:: https://bibliotekanauki.pl/articles/2044461.pdf
Data publikacji:: 1998
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: inheritance
tissue culture
Triticum aestivum
occurrence
in vitro
winter wheat
gene mutation
plant breeding
callus induction
frequency
somaclonal variation
wheat
embryo
Opis:: Plants were regenerated from immature embryo cultures of 35 winter wheat genotypes. General responses of regenerated plants were investigated and a total of 7142 R₂ spike lines from 1593 R₁ plants were assessed in the field for somaclonal variants in 1985/86, 1986/87 and 1987/88. Selected variants were studied for their possible genetic inheritance. From regenerated plantlets, 81% survived and 63% produced fertile plants. Forms with reduced plant height, length of spike and other morphological abnormalities were found in this progeny. Populations of R₁ plants were highly variable due mainly to the physiological disturbances resulting from the in vitro process. Overall somaclonal variation frequencies were 14.2% per plant basis and 5.3% per R₂ spike basis. The variants were similar in the three different R₂ generations with predominant variants being negative in plant height, maturity, awns, spike type and plant type. Both uniform R₂ variant families and spike lines were found in addition to the segregating variants which constituted the majority. On average, in a variant family or line, 18% and 14% of their component lines and plants were variants, respectively. Inheritability was demonstrated for the uniform variant families and spike lines as well as segregated variants. Of those 134 selections, about 70% were classified as inheritable. Both recessive and dominant gene mutations at one, two or three loci were evident in some variants as suggested by the segregating data.
Źródło:: Journal of Applied Genetics; 1998, 39, 1; 59-72
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Molecular markers for leaf rust resistance genes in wheat
Autorzy:: Chelkowski, J
Stepien, L.
Powiązania:: https://bibliotekanauki.pl/articles/2041986.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: brown rust
wheat
stem rust
plant genetics
resistance gene
fungi
molecular marker
yellow rust
Źródło:: Journal of Applied Genetics; 2001, 42, 2; 117-126
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A comparison of anther culture and maize pollination for haploid production in wheat
Autorzy:: Fedak, G
Burvill, M
Voldeng, H D
Powiązania:: https://bibliotekanauki.pl/articles/2046608.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: plant production
haploid production
F1 hybrid
green plant
growth regulator
wheat
pollination
haploid
anther culture
maize
Opis:: The use of 2,4-D as a post pollination treatment to fertilize florets instead of GA₃ provided a two-fold improvement in seed set, culturable embryos and hence green plant production from wheat and maize pollination. The efficiency of the wheat by maize pollination method for haploid production was equal to the anther culture method in F₁ hybrid combinations that were responsive to anther culture. However, in recalcitrant combinations obtained from non-responsive genotypes the maize pollination method was far superior.
Źródło:: Journal of Applied Genetics; 1997, 38, 4; 407-414
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Production and evaluation of doubled haploid wheat lines
Autorzy:: Pauk, J
Kertesz, Z
Powiązania:: https://bibliotekanauki.pl/articles/2046625.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wheat line
production
doubled haploid
cross combination
haploid plant
anther response
Triticum aestivum
anther culture
F3 wheat line
F1 population
F4 wheat line
F2 population
combining ability
Opis:: F₁, F₂ populations as well as F₃ and F₄ wheat lines coming from more than 300 cross combinations have been used for androgenic wheat studies and more than 5000 haploid plants were produced. Promising doubled haploid lines were tested together with lines produced in the conventional way in yield trials. The two best doubled haploid lines overyielded the standard. On the basis of results related to the general combining ability it is advisible to cross parents with a good combining ability for characters such as high percentage of responding anthers and embryo/callus induction with parents indicating a good combining ability for green plant production. In this way ideal lines can be obtained for doubled haploid production.
Źródło:: Journal of Applied Genetics; 1997, 38, 4; 425-435
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Influence of genetic and environmental factors on anther culture response of wheat
Autorzy:: Zhou, H
Konzak, C F
Powiązania:: https://bibliotekanauki.pl/articles/2046623.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: callus response
plant regeneration
environmental factor
doubled haploid
wheat
genetic factor
Triticum aestivum
anther culture
Opis:: The influences of genetic and environmental factors on the anther culture responses of wheat were investigated. Significant differences for callus induction, plant regeneration, and green plant percentages were observed when the nucleus of Triticum acstivum L. cv. Selkirk was transferred to ten alien cytoplasms by substitution backcrosses. In most cases, the alien cytoplasms decreased anther culture responses, but sometimes they were as good as or better than the T. aestivum cytoplasm. Significant within-genotype variation for anther culture responses were observed for wheat varieties Chris, Yecora Rojo, WA7176 and Edwall, indicating genetic heterogeneity in the present commercial cultivars, and potential for improving anther culture responses by in vitro prescreening. When five genotypes (Chris, Pavon 76, Butte 86, WA6916, and Edwall) were cultured across three (potato-4 liquid, 100 g L⁻¹ ficoll-supplemented, and 6 g L⁻¹ agar-solidified) induction media, the liquid and ficoll-containing media were 10 to 15 times more productive than the agar-solidified medium. Whereas, the ficoll medium was not significantly different from the liquid medium. Several low concentration starch media appeared promising to replace current induction media. The starch media sustained the highcallus-induction properties of the liquid medium, while improving callus aeration similar to that observed on solid media, resulting in markedly higher plant regeneration and green plant percentages.
Źródło:: Journal of Applied Genetics; 1997, 38, 4; 393-406
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: A rapid system for studying foreign gene expression in wheat [Triticum aestivum L.]
Autorzy:: Ortiz, J P A
Ravizzini, R A
Morata, M M
Vallejos, R H
Powiązania:: https://bibliotekanauki.pl/articles/2046807.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Buck Ombu cultivar
gene expression
wheat
leaf segment
transgenic plant
Triticum aestivum
embryo
Opis:: The present work describes a rapid and easy way to study foreign gene expression in wheat through microparticle bombardment. Transient expression of the GUS reporter gene was evaluated in different tissues of the cultivar Buck Ombú. Transformation was carried out employing a helium gun microparticle accelerator and several plasmids. Embryogcnic calli, immature embryos and immature inflorescences showed a higher number of transformed cells per Petri dish. Basal leaf segments were the least efficient. When vectors were tested in scutellar tissue of immature embryos, the maize ubiquitin promoter (Ubil) produced the highest level of transient GUS expression, followed by the alcohol dehydrogenase promoter of maize plus its first intron (Adh1 Adh-intron 1) and the sunflower ubiquitin promoter. The CaMV35S promoter was the least effective. These results were in agreement with previous reports carried out in cell suspensions or embryogenic calli and indicate that wheat immature embryos and immature inflorescences are suitable for rapid test of promoter sequences or transformation conditions. Moreover, efficient transformation of these explants could help in the stable transformation of agronomically important genotypes.
Źródło:: Journal of Applied Genetics; 1997, 38, 2; 123-130
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Plant height and yield components of inbred isogenic and F1 hybrid Rht dwarf wheats
Autorzy:: Flintham, J E
Gale, M.D.
Powiązania:: https://bibliotekanauki.pl/articles/2044459.pdf
Data publikacji:: 1998
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: chemical hybridizing agent
F1 hybrid
wheat
plant height
grain yield
hybrid genotype
heterosis
alpha-amylase
enzyme activity
breeding programme
yield component
Rht allele
Opis:: Single and double-gene Rhtl, Rht2, Rht3, Rht1 + Rht2 and Rht3 + Rht2 isogenic lines of wheat in four parental rht varieties were grown in drilled yield trials at four sites in 1989. The same lines were also grown in 1988 together with hybrid genotypes from CHA (chemical hybridising agent) F₁ production plots. In the inbred lines shorter than one metre, Rht alleles reduced total shoot biomass by shortening the straw; mass of straw per unit plant height was unaffected. Highest grain yield was obtained from plant heights between 70 and 100 cm. The Rht genotype achieving this stature varied according to parent varietal height. The hybrids grown allowed comparisons between intra- and inter-varietal crosses over a range of Rht genotypes. In F₁ hybrids positive heterosis was observed for plant height, grain yield and mean grain weight. Highest yields were obtained from inter-varietal hybrids carrying one, two or three doses of Rht1 or Rht2 or one dose of Rht3. An Rht3lrht hybrid showed resistance to premature α-amylase production during grain ripening.
Źródło:: Journal of Applied Genetics; 1998, 39, 1; 73-83
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Rapid assessment of early embryo development in some wide crosses of cereals
Autorzy:: Slusarkiewicz-Jarzina, A
Ponitka., A
Wojciechowska, B.
Wozna., J
Powiązania:: https://bibliotekanauki.pl/articles/2043154.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: methyl salicylate
pistil
rye
cleared-ovule technique
pollination
cereal plant
megasporogenesis
megagametogenesis
hybridization
wheat
Secale cereale
interspecific cross
genotype
barley
intergeneric hybrid
cereal
endosperm
Hordeum vulgare
embryo
Źródło:: Journal of Applied Genetics; 2000, 41, 2; 75-80
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Cytogenetic effects of Fusarium mycotoxins on root tip cells of rye [Secale cereale L.], wheat [Triticum aestivum L.] and field bean [Vicia faba L.var.minor]
Autorzy:: Packa, D
Powiązania:: https://bibliotekanauki.pl/articles/2046676.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: mycotoxin
rye
rot tip
fumonisin B1
fumonisin B3
mitosis
Triticum aestivum
fungi
tip cell
Fusarium
chromosome
wheat
Secale cereale
bean
fumonisin B2
Vicia faba var.minor
plant tissue
metaphase
moniliformin
Opis:: The effects of fusarial toxins: DAS, T-2, DON, 3 Ac-DON, MON and ZEA, on actively dividing root tip cells of rye, wheat and field bean were investigated. Three concentrations: 1, 5 and 10 µg mL⁻¹ were applied for 24 hours. Nuclei and chromosomes were stained using the Feulgens method. It has been found that trichothecene mycotoxins (DAS, T-2, DON, 3 Ac-DON) had a profound effect on mitosis, as they decreased the mitotic index, produced excessive condensation of pro- and metaphase chromosomes, C-metaphascs and C-anaphases, and caused an accumulation of metaphases. The main effect of trichothecene mycotoxins, probably caused via their influence on protein synthesis, was abnormal functioning of the mitotic spindle.
Źródło:: Journal of Applied Genetics; 1997, 38, 3; 259-272
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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