Temat: karyology - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Aneuploids in the shrub birch Betula humilis populations in Poland
Autorzy:: Jadwiszczak, K.
Jablonska, E.
Klosowski, S.
Banaszek, A.
Powiązania:: https://bibliotekanauki.pl/articles/58036.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: shrub birch
Betula humilis
plant population
Polska
aneuploidy
karyology
chromosome
birch
glacial relict
Opis:: Shrub birch (Betula humilis Schrk.) is endangered glacial relict growing in natural and drained fens and transitional mires. At present study we examined karyotypes of 103 individuals of B. humilis, collected in six populations from eastern and northeastern Poland. We found 60% of diploid individuals with 2n = 28. The rest of studied plants were aneuploids with 26, 27, 29, 30 and 31 chromosomes in their karyotypes. High frequencies of aneuploids in Polish populations of B. humilis could be a consequence of: (i) hybridization with congeneric species, (ii) stress resulting from range fragmentation, (iii) karyotype instability of individuals with 2n ≠ 28, or (iv) vegetative reproduction.
Źródło:: Acta Societatis Botanicorum Poloniae; 2011, 80, 3
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Biological diversity of leeches [Clitellata: Hirudinida] based on characteristics of the karyotype
Autorzy:: Cichocka, J.
Bielecki, A.
Powiązania:: https://bibliotekanauki.pl/articles/838553.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: leech
Clitellata
Hirudinida
internal morphology
external morphology
karyology
biodiversity
cytogenetic analysis
Źródło:: Annals of Parasitology; 2008, 54, 4; 309-314
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Biological diversity of leeches [Clitellata: Hirudinida] based on characteristics of the karyotype
Autorzy:: Cichocka, J.
Bielecki, A.
Powiązania:: https://bibliotekanauki.pl/articles/2143806.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: leech
Clitellata
Hirudinida
internal morphology
external morphology
karyology
biodiversity
cytogenetic analysis
Opis:: The majority of studies on leeches are related to: internal and external morphology. Fewer molecular research projects focus on molecular studies and karyology. The latter are needed to explain the evolutionary and systematic issues. Karyotypes for 22 species of Hirudinida have hitherto been determined, including: 8 species belonging to the Glossiphoniidae family, 3 species of Piscicolidae, 7 of Erpobdellidae, 1 of Haemopidae and 3 of Hirudinidae. The chromosome number vary among individual groups of leeches. Within Glossiphoniidae the chromosome diploid number ranges from 14 to 32, in Piscicolidae from 20 to 32, in Erpobdelliformes from 16 to 22, and in Hirudiniformes from 24 to 28. The karyological analyses were used to show phylogenetic relations between main groups of Hirudinida, and the diploid number of 16 was suggested to be a primitive value. This number tends to increase as the evolution progresses. The phylogeny scheme of leeches proposed by Mann shows the Glossiphoniidae as primitive to the Piscicolidae, and Hirudinidae as giving rise to the Haemopidae and Erpobdellidae. Those hypotheses are herewith confronted with morphological, molecular, karyological, ecological and behavioral data.
Źródło:: Wiadomości Parazytologiczne; 2008, 54, 4; 309-314
0043-5163
Pojawia się w:: Wiadomości Parazytologiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Systematics and karyology of the section Phleum in the genus Phleum
Autorzy:: Joachimiak, A
Kula, A
Powiązania:: https://bibliotekanauki.pl/articles/2046626.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Phleum
systematics
Phleum pratense
Phleum commutatum
heterochromatin
Phleum alpinum
Phleum rhaeticum
Phleum nodosum
evolution
karyology
karyotype
Opis:: The article presents a concise history of systematic studies on taxa included in the section Phleum of the genus Phleum. The authors discuss the results of cytotaxonomic studies within the section which have been conducted so far and their importance for studies of phylogeny of particular species. It is suggested that the section should be divided into five species on the basis of karyosystematic criteria considering the karyotype structure as well as localization of heterochromatin in the genome. The question of origin of two polyploid species (P. commutatum Gaud. and P. pratense L.) is also discussed.
Źródło:: Journal of Applied Genetics; 1997, 38, 4; 463-470
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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