Abstract
Preliminary experiments were carried out in spring 2006. The percentage of fruit set of 'Schattenmorelle IR-2', 'Koral', 'Debreceni Bötermö', 'újfefértói Fürtos' and 'Karneol' was higher after open pollination compared with self-pollination. The cultivar Vowi had an inconsiderably higher percentage of fruit set after self-pollination compared with open pollination. The percentage of fruit set in 'Debreceni Bötermö' and 'újfehértói Fürtos' was about 25 % higher after pollination by 'Schattenmorelle IR-2' and 'Koral' compared with the percentage of fruit set after cross - pollination of both cultivars with each other. In general, they did not appear to be good pollinators with each other. The highest quality of pollen was observed for the following cultivars: 'Schattenmorelle IR-2', 'Koral' and Vowi and the lowest result was obtained in 'újfehértói Fürtos'. The highest yield was given by the following cultivars: Vowi, Schattenmorelle IR-2 and Koral.
Highlights
It is believed that the main role in fruit set in sour cherries has the process of pollination of flowers
Results obtained in these studies confirm these data, because the best results after cross-pollination between the Hungarian cultivars were observed after the pollination with the cultivars which had a high quality of pollen
Hungarian cultivars need the company of pollinators to give a satisfactory yield in Polish conditions
Summary
It is believed that the main role in fruit set in sour cherries has the process of pollination of flowers. Some biological features of sour cherries make the effectiveness of pollination lower and cause poor fruit set. According to this scientist, these features are the following: low fertility potential of cultivars, short effectiveness of flower pollination period and low pollen quality. These features are the following: low fertility potential of cultivars, short effectiveness of flower pollination period and low pollen quality This author (1975) believes that viability and germination are the most important for the quality of pollen. Wociór called this kind of pollen (viable without germination capacity) non-functional pollen He said that the viability of a pollen depends on the time of taking trials and on weather conditions during winter and spring periods. Williams (1970) looks at the case from the same point of view and adds that a good pollinator needs to be compatible with the pollinated cultivar
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