Affects electron transport; yellow-green seedling lethal. Yellow green seedling leaves, fluorescence class IV and undetermined block in photophosphorylation (Leto and Miles 1977; Miles 1980, 1982). TB-6Lc uncovers (Miles et al. 1985). Classification: hcf trait, very good; reduced leaf chlorophyll, very good. Viability: seedling lethal at 3- to 4-leaf stage. (Polacco). Genetic 2005 6 coordinates determined from these recombination and map data: TB-6Lc(6) hcf48; see MaizeGDB ID:104697. This gene was originally curated in MaizeGDB Database and the map position was displayed on the maize bins map if feasible.