Abstract
The aim of the present research was to study the extent of the drop off of blackcurrant flowers and young berries in the conditions of northern Europe, depending on particular genotypes and weather conditions. The study was carried out in southern Estonia in 2004–2007. The experiment involved nine recently selected genotypes from the blackcurrant breeding program of the Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre and 10 parent genotypes. Drop off is considerably influenced by the weather conditions during flowering (temperature, precipitation) and the particular genotype. Drop off is lower in genotypes ‘Ats’, 6-90-5, 1-90-15 and ‘Pilenai’, whereas it is high in genotypes ‘Zagadka’ and ‘Karri’. There is an average positive correlation between the cluster length, the number of flower buds in cluster and the extent of drop off. A strong negative correlation was found between the intra-flower fertilization ability of the genotype and drop off. There may be specimens with both similar as well as a very different extent of drop off among the genotypes originating from the same crossing combination. Drop off was lower among the genotypes where cultivar ‘Öjebyn’ was one of the parents.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Acta Agriculturae Scandinavica, Section B — Soil & Plant Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
