‘IPR JULIETA’, A NEW EARLY LOW CHILL REQUIREMENT APPLE CULTIVAR

Most of the high quality apple cultivars need high chill accumulation during the wintertime to both break bud dormancy and to grow normally in the spring.
Not enough chilling accumulation to fulfill its needs will decrease both fruit production and fruit quality, and even may limit production.
The apple breeding program at IAPAR, Paraná State, Brazil, started in 1979. The aim of this program is to develop low chill, disease resistant apple cultivars with commercial fruit quality, which would be capable to perform well in subtropical climatic conditions. ‘IPR Julieta’ is a new early cultivar selected within this program.
It performs well in locations that accumulates 100-500 chill units (CU). It is resistant to necrotic leaf blotch (Colletotrichum spp.), the main apple disease in humid regions in the South of Brazil.
It it is highly productive, fruits have good quality for the season, and it is a good pollinizer for ‘IAPAR 75 – Eva’, a previous cultivar released by this program that is in expansion. ‘IPR Julieta’ ripen 10-14 days before ‘IAPAR 74 – Eva’, fruits have regular shelf life, and they can be stored 30-45 days in cold room storage.

VIII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics

R. Hauagge

Malus × domestica, dormancy, low chill requirement, breeding

https://doi.org/10.17660/ActaHortic.2010.872.25