The effect of pollenizers on the fruit set of different apple cultivars

Istraživan je utjecaj sorata oprašivača (‘Gala’, ‘Idared’ i ‘Jerseymac’) na intenzitet zametanja plodova jabuka sorti ‘Elstar’, ‘Julyred’ i ‘Golden delicious Klon B’. Kod sorte ‘Elstar’ najveći postotak zametanja plodova utvrđen je nakon oprašivanja polenom sorte ‘Gala’ (48,93%), a najmanji kod oprašivanja polenom sorte ‘Idared’ (29,86 %). Najmanji postotak zametanja plodova sorte ‘Julyred’ utvrđen je nakon oprašivanja polenom sorte ‘Gala’ (10,43%), dok su veći postotci zametanja utvrđeni nakon oprašivanje polenom sorata ‘Idared’ i ‘Jerseymac’, između kojih nije bilo značajne razlike. Oprašivanje cvjetova sorte ‘Golden Delicious Klon B’, polenom sorte ‘Jerseymac’ dalo je značajno najmanji postotak zametanja plodova (8,87%). Značajno najveći postotak zametnutih plodova utvrđen je nakon oprašivanja polenom sorte ‘Gala’ (15,28%). Kod sorte ‘Elstar’ utvrđen je najveći postotak zametanja plodova (30 - 49%), ovisno o oprašivaču, dok je kod sorte ‘Golden delicious Klon B’ utvrđen najmanji postotak zametanja plodova (9-15%). Razlike u intenzitetu zametanja plodova mogu biti posljedica različite klijavosti polena pojedinih sorti oprašivača i poklapanja S - alela između sorata.The effect of pollenizer (‘Gala’, ‘Idared’ and ‘Jerseymac’) on fruit set of cvs. ‘Elstar’, ‘Julyred’ and \u27Golden Delicious Clone B’ was studied. In cv. ‘Elstar’ highest fruit set was obtained after pollination with cv. ‘Gala’ (48.93%), and lowest after pollination with cv. ‘Idared’ (29.86 %). The lowest fruit set in cv. ‘Julyred’ \u27 was obtained after pollination with cv. ‘Gala’ (10.43 %), and higher after pollination with cvs. ‘Idared’ and ‘Jerseymac’. There was no significant difference between these two pollenizers. The lowest fruit set of cv. \u27Golden Delicious Clone B’ was obtained after pollination with cv. ‘Jerseymac’ (8.87 %) and highest with cv. ‘Gala’ (15.28 %). Cv. ‘Elstar’ had highest fruit set (30 - 49 %) depending on pollenizer, and cv. \u27Golden Delicious Clone B’ the lowest (9-15 %). The differences in fruit set can be attributed to differences in pollen germination among pollenizers, as well as overlapping in S - alleles