In the populations of non-forest woody vegetation in the form of belts–biocorridors on the borders of agriculture landscape - in dominant representation, there occur species and spontaneous hybrids of the genus Prunus L. Generative reproductive potential (GRP) of some of taxa Prunus L. from 2010 to 2011 years had been analyzed on the territory in the south-west Slovakia at 3 localities (Jelenec, Vráble and Veľké Úľany). Experimental observations were done during the important blackthorn phenophases from April to May and from September to October. In this work we detected the ability of the flowers formation (the number of flowers we investigated the phenological stages of full flowering (April-May) on indicated specimens, respectively. To select twig end individuals, we randomly selected inflorescence, we counted the number of flowers in clusters and calculated the average) and the fruits formation (we investigated the number of fruit in the months of September to October, methodical process as the first point ) to determine the generative reproductive potential (GRP). Generative reproductive potential of individual taxa in the studied period 2010 to 2011 was relatively balanced. Experimental locality Vráble GRP was zero across all individuals in both years. Important thing for the amount of GRP on the location are surveyed habitats and related environmental conditions. On the actual population had the worst effect the occurrence of diseases and pests. The main disease at the locality Vráble was Clasterosporium carpophilium with the symptoms on leaves - the leaves were made round to oval, a few millimeter, dark purple with a brown edge stain and on fruits - the fruits we have seen tiny blotches, which was accompanied by gummosis. It is important to note also that the generative reproduction of individuals examined longer-term research is needed. Our results show that 2011 was the production of flowers richer and less prone to diseases incidence than in 2010. The originality of this research is in the detection of GRP of genus Prunus spp., which mainly form non forest woody vegetation and biocorridors in the agricultural land of Slovak Republic.

reproductive biology, genus Prunus L., Prunus spinosa L.

Presentation: oral