Selection of sujtable polinazer for selected hazelnut cultivars.
2010
Hossein Ava, Sona | Javadi, Davud | Tajaseb, Bahman
This study was carried out to evaluate viability of pollen grains of five hazelnut cultivar (Gercheh, Negret, Pashmineh, Gerdoii and Gerd-e-Eshkevarat) and selection of the best pollinizer of them, in order to study storage time and obtaining a proper pollinizer. In the first experiment, half of pollen grains were stored at room temperate (25±1°C) and the rest were stored at refrigerator (4°C). After 24 hours, 5, 10 and 20 days, pollen grains were cultured on medium culture containing 10, 15 and 20% sucrose and 10 g/l agar (pH=6.5). In medium containing 15% sucrose were observed the highest rate of pollen germination. After 20 days the mean of germination were observed in Gerde-e-Eshkevarat, Pashmineh, Gercheh, Gerdoii and Negret cultivars with means 54.48, 42.67, 42.21, 35.59 and 31.41% respectively at 4°C. In the second experiment, Kasford, Dubase and Secorp cultivars were pollinated with 5 male parents. Open pollination was as control. Open pollination and pollination with Gercheh and Gerduii as male parents (means 51.37, 49.83 and 45.51 respectively) and Secorp and Dubase cultivars as female parents (means 55.03 and 52.92) have the highest mean of fruit set. Open pollination of Dubase and Secorp and cross pollination between Gercheh with Dubase and Secorp have the highest mean of fruit set. Kasford cultivar with mean 19.75 were produced the highest mean of blank fruit percentage.
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