CROSS-COMPATIBILITY STUDIES IN SOME HUNGARIAN SWEET CHERRY HYBRIDS
A sweet cherry fertilization experiment was begun with 6 maternal and 7 pollen partners (Hungarian sweet cherry selections plus Stella). Self-fertility was determined by analyzing fruit set after unassisted self-, hand-self- and open-pollination in 1999 and 2001. Among the presumably self-fertile pollinizers, only IV-6/240 seemed to be self-sterile.
Compatibility relationships were assessed over 2 years for 20 combinations in which the maternal cultivars were self-sterile and the pollinators self-fertile. The combinations resulting in 10% or more fruit set were considered to be compatible. Of these, 5 combinations were fully compatible, while 7 were clearly incompatible. There were some contradictory results in 8 test-cross combinations, probably for cold weather conditions during 2001 bloom, which therefore should be repeated.
In 2000 and 2001, pollen tube growth was examined for two combinations (Margit x Alex and Germersdorfi 3 x Alex) in which incompatibility of these partners was confirmed. Some self-fertile hybrids/cultivars, even Stella, were poor pollinizers in certain combinations. This contradicts the premise that self-fertile cultivars are universal pollen donors.
Compatibility relationships were assessed over 2 years for 20 combinations in which the maternal cultivars were self-sterile and the pollinators self-fertile. The combinations resulting in 10% or more fruit set were considered to be compatible. Of these, 5 combinations were fully compatible, while 7 were clearly incompatible. There were some contradictory results in 8 test-cross combinations, probably for cold weather conditions during 2001 bloom, which therefore should be repeated.
In 2000 and 2001, pollen tube growth was examined for two combinations (Margit x Alex and Germersdorfi 3 x Alex) in which incompatibility of these partners was confirmed. Some self-fertile hybrids/cultivars, even Stella, were poor pollinizers in certain combinations. This contradicts the premise that self-fertile cultivars are universal pollen donors.
Békefi, ZS. and Brózik, S. (2005). CROSS-COMPATIBILITY STUDIES IN SOME HUNGARIAN SWEET CHERRY HYBRIDS. Acta Hortic. 667, 75-82
DOI: 10.17660/ActaHortic.2005.667.8
https://doi.org/10.17660/ActaHortic.2005.667.8
DOI: 10.17660/ActaHortic.2005.667.8
https://doi.org/10.17660/ActaHortic.2005.667.8
Prunus avium, pollination, fruit set, self-fertility, pollen tube, universal donor
English