X Citroncirus spp. RUTACEAE
Received as budwood from Russia via Glen Dale & CCPP, 1979.
This accession is stated to be a chimaera of Poncirus trifoliata and Citrus unshiu, no specific cultivars or selections being noted.
Rootstocks of accession
Season of ripeness at Riverside
October to November
Notes and observations
This accession received thermotherapy during processing as a foreign import. Information received with budwood: From Soviet Union. Donated by N.I. Vavilov institute of Plant Industry, Leningrad. Received Feb. 1979. From Sukhum Experiment Station (Gul'rupah). Chimera of Poncirus trifoliata x Citrus reticulata cv. Satsuma. Tree Cultivated. Breeding material. Budwood. Destination: W. P. Bitters, etc.
RRK, 01/16/2014: Not much is known about this genotype. This accession is stated to be a chimaera of Poncirus trifoliata and Citrus unshiu, no specific cultivars or selections being noted. The tree has trifoliate leaves and fruit that is somewhat like satsuma. The seeds also look somewhat like satsuma seeds but are more elongate than trifoliate seeds usually are. A comment received from Dr Ed Stover (2014-01-16) states that "with trifoliate leaves and Satsuma-like fruit, it sounds like it really is a periclinal (hand-in-glove) chimera." Note that this genotype was previously erroneously identified as PI 539818. Osbervation data from 1989 - 1992 were originally taken with that designation.