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1

Molecular polymorphism of strains within Paramecium septaurelia (Ciliophora, Oligohymenophorea)

100%
Przybos E., Tarcz S.
Folia Biologica
|
2005
|
vol. 53
|
issue 1-2
87-93
EN
RAPD-PCR fingerprinting and ARDRA riboprinting revealed polymorphism within P. septaurelia strains from Russia (4 strains from Lower Volga Basin), and one strain from USA, Florida. However, the first method showed the existence of four RAPD genotypes while the second revealed only two groups of strains with different band patterns. All studied strains had a high percentage of surviving hybrid clones in the inter-strain crosses, with little differentiation of strains within species. Intra-species differentiation of strains in RAPD band patterns may be connected with the degree of inbreeding for the studied species. Species of the P. aurelia complex can be arranged according to the degree of inbreeding characteristic for each, which is correlated with the degree of DNA polymorphism revealed by the RAPD method from extreme inbreeders (e.g. P. sexaurelia), moderate inbreeders (e.g. P. triaurelia) to weak inbreeders (e.g. P. pentaurelia). P. septaurelia of the P. aurelia complex should be included in the group of extreme inbreeder.
2

Testis follicle number in psyllids (Psylloidea, Homoptera) as an anatomical feature in studies of systematic relations within the group.

88%
Glowacka E., Kuznetsova V., Maryanska-Nadachowska A.
Folia Biologica
|
1995
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vol. 43
|
issue 3-4
115-124
EN
The study presents all data recently available on the number of follicles and arragement of their spermatocyte cysts in 132 species of psyllids representing the world fauna.Anatomical differences in the male reproductive system of psyllids and their validation for phylogenetic relations are discussed in detail.
3

Genetic diversity of ornamental Allium species and cultivars assessed with isozymes

75%
Krzyminska A., Gawlowska M., Wolko B., Bocianowski J.
Journal of Applied Genetics
|
2008
|
vol. 49
|
issue 3
213-220
EN
The aim of the study was to verify the similarity of 13 species and 5 cultivars of ornamental alliums and classify them into groups based on morphological and isozyme variation. The work embraced: Allium aflatunense, A. caeruleum, A. christophii, A. giganteum, A. karataviense, A. moly, A. nigrum, A. pyrenaicum, A. rosenbachianum, A. schubertii, A. siculum (syn. Nectaroscordum siculum), A. sphaerocephalon, A. strictum, A. stipitatum 'Album', A. 'Ivory Queen', A. 'Lucy Ball', A. 'Mont Blanc', and A. 'Purple Sensation'. Scape length, inflorescence diameter, and flowering period were recorded. Isozyme marker polymorphism was assessed by starch gel electrophoresis. Eight polymorphic isozyme systems (AAT, GPI, PGM, ALAT, ACP, DIAP, ALDO, PGD) were selected from 16 analysed in the taxa. Besides the differences between the taxa, the isozymes revealed intraspecific polymorphism in 5 systems. A total of 37 markers were obtained and used for dendrogram construction. The most similar taxa were A. karataviense with A. ?Ivory Queen', and A. karataviense with A. christophii (similarity level 0.78). A high similarity of 11 taxa belonging to one group (A. aflatunense, A. christophii, A. giganteum, A. karataviense, A. nigrum, A. schubertii, A. 'Ivory Queen', A. 'Lucy Ball', A. stipitatum 'Album', A. 'Mont Blanc', A. ?Purple Sensation') suggested that this group could be identified with the subgenus Melanocrommyum.
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