The variability in the rhytidome of wild pear - Pyrus pyraster (L.) Burgsd.
2003
Paganova, V.,Slovenska polnohospodarska univ. v Nitre (Slovak Republic). Katedra biotechniky zelene FZKI
Within the study of the wild pear variability in Slovakia, there was also rhytidome evaluated among the other traits. Three basic rhytidome types were created - reticulated, rectangle-shaped and square-shaped, which were also differentiated as slender and coarse types by segment thickness. In many cases the thickness of rhytidome did not depend on pear age. The rectangle type of rhytidome was dominant (68.7%) in 1,100 individuals analysed, its slender type being the most frequent (45.9%) followed by the coarse type (22.8%). The reticulated type of rhytidome was observed for 16.3% individuals. The square type of rhytidome was found in 15.0% of pears and its coarse type and slender type represented 10.9% and 4.1%, respectively, of the whole number of the plants analysed. A similar percentage of the particular rhytidome types was detected in lower taxa. Like within the whole population. There was a statistically significant relationship between rhytidome type and lower taxa of the wild pear. The most frequent was rhytidome with greyish-brown colour (87.7%), while blackish colour was observed in 7.0% and brown one in 5.3% of individuals.
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