Among the main features of the selection presented within the research projects of the University of Bologna on 29 October 2019 at the San'Anna in Cadriano (Bologna) farm, we can mention a resistance to scab and to grey aphid attacks, and a higher Brix.
"We organized this Open Day - explained the breeder Roberto Gregori - to observe the new winter selections of apple trees. We performed the cuts at different times, in order to evaluate the Brix levels, the preservability and the color. We also brought samples from different production areas”.
Producers are constantly seeking for resistant varieties in order to reduce treatments and costs. These genetic characteristics from the University of Bologna are resistant to scab and grey aphid attacks. And, on average, they are all very sweet.
Roberto Gregori (breeder), Stefano Tardini (Unibo University) and Enrico Zanzi
Tasting tests were carried out on-site. One of those that met with the highest approval index was the selection BO B47G086, a hybrid of Royal Gala and Florina. Harvesting time is similar to that of the Golden Delicious, the plant has medium sturdiness, standard posture and a high production.
We performed three cuts for this selection," said Gregori, "by measuring the main parameters. The cuts were done on 16 and 26 September, and 8 October. The °Brix level was respectively 13.3 (hardness 9.2 kg), 14.6 (hardness 8.94 kg), and 15 °Brix (8.56 kg hardness)".
For its high °Brix, the BO B48C251 selection is particularly interesting. At the time of harvest it was already at 18 and it reaches approximately 22 at the end of storage. It's a hybrid of Renetta Grigia di Torriana and GoldRush. It is harvested 2-3 weeks after Golden Delicious. The plant is moderately resistant to scab, but the epidermis characteristics of the fruit ensures immunity. It is not only interesting for its taste, but also for its preservability.
The BO B48F054 selection is a golden apple similar to Golden, with °Brix over 13.5, fine texture, juicy taste. Its harvesting is carried out after that of Golden.
Regarding the red variety, the BO B47G082 is a hybrid harvested around the end of October, characterized by a high productivity and resistance to scab. The fruit is of medium size, on average 190 grams, and it is two-tone with a tendency to pink. The pulp is white and juicy. It is a variety with a brilliant colour, almost ready for consumption at the moment of picking.
The most summery apple is the BO B47G047 selection, which is harvested 3-4 weeks before Golden. It has fruits that weigh on average 210 grams, with an intense red color and a good balance between sugar concentration and acidity (14 °brix, 3.8 meq/10gr).