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Wyszukujesz frazę "Odrzykoski, I." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Sequence diversity of two chloroplast genes: rps4 and tRNA Gly (UCC), in the liverwort Marchantia polymorpha, an emerging plant model system
Autorzy:
Kijak, H.
Lodyga, W.
Odrzykoski, I.J.
Powiązania:
https://bibliotekanauki.pl/articles/56463.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
The primary purpose of this study is to evaluate the sequence variation for two regions of chloroplast DNA in a collection of 27 taxonomically well-annotated clonal lines of Marchantia polymorpha sensu lato derived from European populations. We attempted to develop molecular markers so as to identify three taxa usually recognized as subspecies. We sequenced two regions: the rps4 gene along with the rps4-trnT intergenic spacer and an intron of the tRNAGly (UCC) gene. Samples of Marchantia paleacea ssp. diptera from Japan were used for comparative purposes. Three haplotypes (MA, MB, and MC) were identified for the species, and almost all sequence divergence between subspecies was found to occur at the level of 0.0023–0.0032 substitutions per site. The sequence divergence between M. polymorpha and M. paleacea was tenfold greater (0.0331–0.0340). We did not detect any differences between M. paleacea and homologous sequences from the reference chloroplast genome of M. polymorpha obtained from the GeneBank (NC_001319). It was confirmed that the cell suspension line A-18 used for the sequencing of the full chloroplast genome in 1986 was incorrectly taxonomically annotated.
Źródło:
Acta Societatis Botanicorum Poloniae; 2018, 87, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfing alien genotypes and their consequences for genetic variationin clonal seed orchards of Pinus sylvestris L.
Autorzy:
Przybylski, P.
Kowalczyk, J.
Odrzykoski, I.
Matras, J.
Powiązania:
https://bibliotekanauki.pl/articles/2077755.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
genetic analysis
Pinus sylvestris
tree breeding
isoenzyme marker
grafting error
Opis:
This study investigates the rates of grafting and planting errors that occur in seed orchards, and evaluates their effects on the genetic diversity and relatedness of genotypes. The study used three clonal Scots pine seed orchards of differing ages and clonal composition located in the forest districts of Susz, Pniewy and Zdrojowa Góra, Poland. Maximum breeding ability within a seed orchard requires isolated from external sources of pollen, and have no alien genotypes inside the orchard. We used 13 isoenzyme markers to determine the genotypic identity of ramets and compared the number of genotypes of the actual current ramet population (W1) with genotypes comprising the originally intended plus trees (designated as W0) to estimate the genotypic assignment error rate per orchard. For both W0 and W1, we calculated the effective number of clones and the relative effective number of clones. Ramet assignment errors were detected in all three seed orchards. Gnotypic errors ranged from 5.8% to 37.7% across orchards. A total of 46 alleles were found, with the mean number of alleles per locus ranging from 2.77 to 3.23. At individual loci, the level of observed heterozygosity was variable. Alien genotypes had negligible effects on seed orchard heterozygosity. The Fst values between seed orchards amounted to 0.6% between Susz and Pniewy and 1.1% between Susz and Zdrojowa Góra. The effect on genetic variation of ramet assignment errors was small and influenced genetic diversity only in the case of the Susz seed orchard. However, our results suggest that negative effects of alien genotypes can occur on breeding value of seeds from analysed seeds orchards.
Źródło:
Dendrobiology; 2019, 81; 40-46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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