HE red color of the cultivated tomato, Lycopersicon esculentum Mill. is due to T the carotenoid lycopene. LEROSEN et al. (1941) and ZECHMEISTER et al. (1941) first analyzed the carotenoids of yellow (rr) and tangerine (tt) strains, each of which differs from the red by a single recessive gene. MACKINNEY and JENKINS (1952), JENKINS and MACKINNEY (1953), and TOMES et al. (1953) have examined the ...