Sunray is one of the high beta carotene tomatoes identified in the TreeCropsResearch.org data. I did some searching and was very surprised to find Jubilee in the pedigree which is tt tangerine. Sunray came from a cross between Jubilee and "Pan American". But Sunray's carotene profile is not what you'd expect from tt at all.
A search for Pan American turned up more information about the pedigree, which involved introgressions from wild species, in this research article on cryptic introgressions:
http://www.biomedcentral.com/1471-2229/12/133
"Some of the earliest tomato introgression breeding in the US may have been done indirectly and unwittingly via the French variety Merville des Marchés. Recent phenotypic data collected for Merville des Marchés PI 109834 showed it to be variable in fruit size and smoothness (
http://www.ars-grin.gov/cgi-bin/npgs...lay.pl?1129442 webcite); its genotype was segregating, showed population admixture, and was an outlier based on genetic distance relative to many other S. lycopersicum accessions [8,9]. We postulated that these were indications of S. pimpinellifolium in its ancestry (this idea was examined in the current study). The Fusarium wilt-resistant processing variety Marvel [10] was selected from Merville des Marchés in the early 1900s, and Marvel was a parent of Marglobe released in 1925 [11], which in turn can be found in the pedigree of many important varieties from the 1930s through the late 1950s (H.M. Munger’s tomato pedigree chart provided by E.D. Cobb, Cornell University, 2012). Direct introgression of tomato with wild species in the US commenced in the 1930s concurrent with collection expeditions to geographic centers of origin. The first released cultivar, developed from Marglobe x S. pimpinellifolium, was aptly named Pan American [12]."
Very interesting, but not enough to conclude whether Sunray has the beta gene or some combination of promoter genes from other wild spp.