Evaluation of blackcurrant (Ribes nigrum L.) cultivars in Estonia

Evaluation of the biological-economic and biochemical traits of promising Ribes nigrum hybrids in Estonia

“…Genotype No. 15-09-1 has higher yield and larger fruits than that of the mother cultivar 'Asker' (Kikas et al, 2019). There was a mean positive relationship (r = 0.29 and r = 0.32) between fruit weight and yield and fruit weight and GDD to fruit ripening, respectively.…”

“…The genotypes Nos 7-08-1, 8-08-9 and 5-09-2 needed the most GDD for the beginning of fruit ripening, and the differences between GDD were relatively large between years. The early cultivar 'Mairi' and Nos 10-09-1 and 8-09-3 were shown to be early maturity genotypes, and Nos 7-08-1, 8-08-9 and 5-09-2 were late maturity genotypes (Kikas et al, 2019). Winter damage occurred only in 2018 for the genotypes Nos 11-09-3 and 12-09-1, all with 7 points.…”

“…These genotypes outyielded their mother cultivar. Fruit size is at the same level as that of the 'Intercontinental' but larger than that of the father 'Pamyat Vavilova' (Sasnauskas et al, 2009;Kikas et al, 2019). Genotype No.…”

“…One of the parents of genotypes Nos 7-08-1, 7-08-2 and 7-08-3 was cultivar 'Pamyat Vavilova', which has proved to be a good and stable yielding cultivar in Estonia (Kikas et al, 2019), Russia and Belorussia (Bohonova, 2004;Dmitriyeva, Korovin, 2008). Yield of genotypes was negatively related to GDD to beginning of ripening (r = −0.34) and flower and young fruit drop (r = −0.22).…”