Magazine  (Feb 2019)  Page(s) 135: 19-29.  
 
RrGT1, a key gene associated with anthocyanin biosynthesis, was isolated from Rosa rugosa and identified via overexpression and VIGS
Xiaoming Sui et al.

"Interestingly, R. davurica is one of the parents of R. rugosa ‘Zizhi’, so we speculate that this reason might explain the similar expression patterns between both Rosa species. "

Website/Catalog  (2017)  Page(s) vol. 7, article 15437.  
 
Genetic relationships and evolution of old Chinese garden roses based on SSRs and chromosome diversity
Jiongrui Tan et al.
... a cultivar of R. rugosa, ‘Dahong Zizhi’ (HR), which is the progeny of interspecific hybridization in sect. Cinnamomeae, R. rugosa × R. davurica. 

Article (magazine)  (30 May 2011)  Page(s) vol. 10, no. 22, p. 4524-4531.  
 
African Journal of Biotechnology Vol. 10(22), pp. 4524-4531, 30 May, 2011
Feng et al.
 ‘Zizhi’ was a hybrid of Rosa davurica  Pall. and Rosa rugosa cv. "plena” (Tang, 1994), making their morphological and biological features quite different from the traditional Chinese R. rugosa  cultivars.

Amaranthine branches, amaranthine flowers with more six-whorled petals, and multi-seasonal flowering, its young shoots are lack of punctures.

The article includes a list of 30 "Rugosas", 5 wild accessions and 25 cultivars. 'Zizhi' is the only one noted as being "multi-seasonal flowering".