DIGITALNA ARHIVA ŠUMARSKOG LISTA
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SUMMARY: In order to obtain the insight in the variability of natural populations
of Ruscus hypoglossum L., legally protected species, the morphometric
research was done on specimens from seven natural habitats (Japlenica,
Skupica, Vrhovčak, Strahinščica, Gornji Dragonožac, Kalnik and Oriovac).
Stem length, the total number of phylloclades and bracts, the length and width
of the phylloclades and bracts, and the internodium length were measured.
The ratio between length and width of phylloclades and bracts, respectively
were calculated for insight in shape of phylloclades and bracts.
It was determinate that the analysed morphological characteristics were
very variable. The variability coefficient for populations in total varied from
21.35 % for ratio between length and width of bracts to 56.90 % for the
internodium length. UPGMA analysis with Euclidean distance has shown
that the populations Oriovac and Strahinščica were the most similar
(DE = 1.75). The population that differed the most from the others was the
population Japlenica which is connected to the other six populations on the
high level (DE = 6.94). Plants from population Japlenica had the longest
stems and the biggest phylloclades and bracts. Also, the plants from the population
Japlenica had the highest number of phylloclades and bracts per stem.
In the other six populations, the population Kalnik distinguished itself by the
most oblong phylloclades. The similar results to cluster analysis were obtained
by principal component analysis. The highest contribution to the first PC
axis gave the length of phylloclades, bracts, stem and internodium. The ratio
between the length and width of phylloclades, the ratio between length and
width of bracts, and the number of phylloclades per stem had the most contribution
to the second PC axis.
Key words: Ruscus hypoglossum, morphometry, UPGMA, PCA