Seed received and grown by RK Soost. Also came in as budwood import, see CRC 3985 [PI 539647]. (EM Nauer, 01/1989)The whole story on these (CRC 3981-3985) imports is that they came in as both budwood and seed is that the seed went to Dr Soost in 1985; the budwood went to Glenn Dale in 1985 and increase budwood came here in 1987 and went into CCPP for processing. However, in the meantime, Dr Soost grew seedlings in the greenhouse but did not inform anyone in CCPP that this material was there until he retired in 1987 and the seedling budlines were propagated for the variety collection. (EM Nauer, 01/1989, from record for PI 539172).
Note: The seed sources RCRC 3981-3985 = PI 539172, PI 539644, PI 539645, PI 539646, PI 539647 and the budwood sources RCRC 3981 = PI 539171, RCRC 3983 = PI 539641, RCRC 3984 = PI 539642, RCRC 3985 = PI 539643.
Original USDA spec sheet says this has "low acid". (EM Nauer, 06/1989)
Additional info re Xinhuicheng received from Dr Bitters this month: A sweet orange variety which originated in Fujian Province (Canton). An acidless orange. 110 - 113 g per fruit, SS 13 - 16 %, sugar 11 - 15 %, acid 0.1 - 0.7 %. Ripe Nov - Dec. (EM Nauer, 08/1989)
No fruit. Both trees chlorotic and beginning to self-defoliate. Incompatibility? Phytophthora? Need to repropagate on Ro lemon at Rubidoux to save budline. (EM Nauer, 12/1989)
In fact, the trees were not repropagated on rough lemon but rather on citranges but not until 2005 - 2006, even though one tree did die as of 2001.. Never the less, since this was received as seed and PI 539647 was received as budwood and has been sanitized, PI 539643 is inactivated and PI 539647 is the active accession of 'Xinhuicheng'. (RR Krueger, 05/27/2011)