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Wyszukujesz frazę "Wronska, J." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Pollen morphology of Polish species of the genus Rosa - I. Rosa pendulina
Autorzy:
Wronska-Pilarek, D
Lira, J.
Powiązania:
https://bibliotekanauki.pl/articles/40988.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Rosa
Alpine rose
Rosa pendulina
Polish species
pollen morphology
variability
multivariate analysis
Opis:
The morphology and variability of pollen of Rosa pendulina L. were studied. The material came from 10 native localities of this species. 300 pollen grains were examined. It was established that the diagnostic features of pollen grains of R. pendulina L. were: an elongated, narrow operculum, a poorly developed exine sculpture, long ectocolpi (a low value of the apocolpium index), and the predominance of grains elongated in shape. The results obtained usually correspond to data supplied by other palynologists. A statistical analysis of 10 quantitative grain characteristics showed their variability to be rather low. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed dependences among the grains from the 10 analysed localities
Źródło:
Dendrobiology; 2006, 55; 65-73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollen morphology of Polish species of genus Rubus - Part I. Rubus gracilis
Autorzy:
Wronska-Pilarek, D
Malinski, T.
Lira, J.
Powiązania:
https://bibliotekanauki.pl/articles/41631.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Rubus
Polish species
pollen morphology
Rubus gracilis
statistical analysis
intraspecific variability
pollen variability
locality
Opis:
Pollen morphology and pollen variability of Rubus gracilis were studied. A total of 260 grains from 13 natural Polish localities were examined. Important characteristics include: a stretched bridge; a visible pore area and endopores; ectocolpi arranged regularly, more or less evenly spaced or, more rarely, joining one another in the apocolpium, long (79.3% length of the polar axis) and narrow; exine sculpture striate, distinct; striae and muri of equal width, rather narrow; striae usually running parallel to the polar axis, sometimes forming semicircles in the apocolpium zone; with distinct perforations. The size, outline and shape turned out to be poor criteria when identifying the species. A statistical analysis of 10 quantitative grain characteristics showed their little variability. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed no differences among the grains from the individual localities, likely the result of apomixis.
Źródło:
Dendrobiology; 2006, 56; 69-77
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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