Vol. 7, Issue 1 (2019)
Temperature induction response (TIR): A novel physiological approach for thermo tolerant genotypes in finger millet (Eleusine coracana (L.) Gaertn.)
Author(s): P Bhavana, M Subba Rao, D Mohan Reddy and P Sudhakar
Abstract: A novel Temperature Induction Response (TIR) technique was standardized for ragi crop. We have standardized the sub lethal i.e. challenging temperatures as 37-54ºC (for 5 hours) and lethal temperatures as 58ºC (for 2 and half hours). Using this standardized TIR protocol, highly thermo tolerant genotypes were screened from 50 finger millet germplasm. Among the genotypes, BR-36, TNAU-1214, GPU-28, VR-900, KOPN-933 and PPR-2885 showed highest thermo tolerance in terms of 60 to 95 per cent seedlings survival and lower reduction in root and shoot growth. These genotypes have intrinsic heat tolerance and they can be explored as donor source in breeding programmes aimed for global warming.
Fig. 1: Protocol of the technique: Temperature Induction Response (TIR)
Fig. 2: Thermo induction response of finger millet seedlings in tolerant and sensitive genotypes
Pages: 285-289 | 607 Views 126 Downloads
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How to cite this article:
P Bhavana, M Subba Rao, D Mohan Reddy, P Sudhakar. Temperature induction response (TIR): A novel physiological approach for thermo tolerant genotypes in finger millet (Eleusine coracana (L.) Gaertn.). Int J Chem Stud 2019;7(1):285-289.
