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Not AvailableRed rot, wilt and smut are major diseases that seriously affect sugarcane production in India. The increase in climate variability and drastic change in climate patterns have great impact on occurrence of diseases and in sugarcane, resistance breeding is the only solution to tackle this problem. In an attempt to increase diversity of wild germplasm through introgression in base broadening programmes, variability within Saccharum species was assessed to identify different sources of resistance to red rot and smut for use in breeding programmes to identify resistant cultivars. The 136 BC1 hybrids from two crosses of improved S.officinarum x improved S. robustum and 100 BC2 clones involving BC 1× Co 86011, Co 09014 were evaluated for red rot ( cf 671 by CCT ) and assessed for natural incidence of smut during 2016 and 2017 seasons. Out of 100 BC1 hybrids with improved S.officinarum as recurrent parent, 62 clones ( 45.58 percent ) had no natural incidence of smut and 32 clones ( 23.52 percent ) showed MR or R reaction to red rot. Of the 80 tested BC2 lines involving commercials as a backcross parent, 18 ( 22.5 percent ) were resistant to moderately resistant to red rot and 31 clones (38.75 %) were free from smut incidence. BC1 progenies had more resistant types than BC 2. Eleven clones from this group viz.,12-15,12-44,13-36,13-44,13-69,13-251,14-48,14-14,14-144,14-125,14-102 combined resistance to red rot and with no natural smut incidence in trials. Along with resistance these clones combined yield and sucrose percent at 360 days. About 11.2 percent of the BC1 progenies of ( Co 8371 x S.barberi ( Pathri ) x Co 0209 ) were moderately resistant to red rot and clones 13-176 and 14-60 combined sucrose, red rot resistance and yield. The F1 progenies ( 281 ) involving improved S. spontaneum had 27.78 percent produced predominantly resistant progenies involving 96-38,96-195,97-12, 96-319, 96-137, 96-77 as donors. The study suggests that resistant hybrids involving improved S. robustum and S. barberi germplasm could also be used as source of smut and red rot resistance in sugarcane breeding programs apart from S. spontaneum. The new genetic stocks identified with multiple disease resistance and other desirable traits are to be exploited by the breeders to combat the future climate challenges to identify clones with stable resistance.Not Availabl