Origin and Development

ICSV 197 was developed by pedigree selection from a cross of IS 3443 x DJ 6514 made in the 1980 postrainy season at ICRISAT Center, Patancheru. The parent IS 3443 is a Caudatum-Zera Zera type Achigo landrace from Sudan. DJ 6514 is an improved midge-resistant Durra-kafir type sorghum variety bred by the University of Agricultural Sciences, Dharwad, India. Pedigree selection in progenies of the F2, F3, F4 , and F5 generations was done lternatively under natural midge infestation at Dharwad during the late rainy season and at ICRISAT Center, Patancheru, during the late postrainy season, India. The F6 bulk was evaluated for midge resistance under natural midge infestation at Dharwad during the late rainy season of 1983 and was observed to be a line with high midge resistance. During 1984-85 the pure line was tested in AICSIP yield trials and its sorghum midge nursery as SPV 692.