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S.J. BHEEMESH*, M. SUBBA RAO, M. REDDI SEKHAR AND P. SUDHAKAR
Dept. of Genetics and Plant Breeding, S.V. Agricultural College, ANGRAU, Tirupati – 517 502, Chittoor Dt., Andhra Pradesh
A novel temperature induction response (TIR) technique was standardized for foxtail millet crop. The sub lethal i.e. challenging temperatures as 38-58ºC (for 5 hours) and lethal temperatures as 59ºC (for 2 hours) was standardized. Using this standardized TIR protocol, highly thermo tolerant foxtail millet genotypes were screened from 60 foxtail millet germplasm. Among the genotypes, Prasad, SiA 3580, SiA 3604, SiA 3618, SiA 3623, SiA 3625 showed high thermo tolerance in terms of 70-100 per cent seedlings survival and 2-15% reduction in root and 7-18% reduction in shoot growth. These genotypes have intrinsic heat tolerance and they can be explored as donar source for developing high temperature tolerant foxtail millet genotypes.
TIR, foxtail millet, heat tolerance