Ueno Satsuma Mandarin Budwood

Citrus unshiu.

‘Ueno’ is a satsuma mandarin variety that was discovered as a bud mutation of ‘Miyagawa’ satsuma in 1970.

‘Ueno’ is the second most popular early satsuma variety in Japan, maturing between early October and early November. This is up to two weeks earlier than ‘Miyagawa’ satsuma.

Trees of ‘Ueno’ satsuma have a typical satsuma growth habit with consistent production. The fruit stores well on the trees, reportedly losing little flavor over the following four weeks. Fruit size of ‘Ueno’ is medium and have a smoother, thinner rind than ‘Miyagawa’ with a deeper reddish-orange color. 'Ueno' has less albedo, higher sugar content, and lower acidity than ‘Miyagawa’. Park et al (2010) reported that 10 genes were up-regulated in 'Miyagawa' and 'Ueno' and related these findings to phenotypic differences.

Rootstocks of accession:  Carrizo citrange, C-35 citrange.

Season of ripeness in the climatic conditions of Riverside, California:  October to November.

Prepared by the Givaudan Citrus Variety Collection at The University of California Riverside.