Screening of Rice Genotypes for Thermotolerance by Tir Technique

Department of Crop Physiology, College of Agriculture, Rajendranagar, ANGRAU, Hyderabad. 1. Principal Scientist, Institute of Frontier Technology, RARS, Tirupati. *corresponding author: [email protected] ABSTRACT: Production of rice--the world's most important crop for ensuring food security and addressing poverty will be defeated as temperatures increase in rice-growing areas with continued climate change. Climate change needs us to look at various alternatives for more drought tolerant and tougher strains and to develop a technique to screen a large number of genotypes for high temperature tolerance. Adapting temperature induction response (TIR) technique 100 rice genotypes were screened for thermotolerance. Significant variation for acquired thermotolerance was observed in 100 rice lines. From the 100 genotypes 30 were exhibits themotolerance to induced high temperature.