抽象的

Screening Of Thermo Tolerant Rice Genotypes For Heat Tolerance At Seedling Stage Using TIR Technique Also Comparing Allele Sizes

B. Arpitha Shankar*, A. Sri Vidya, N.P. Eswar Reddy

Background: Heat is one of the major factors that considerably limit rice production. Here we report a novel Temperature Induction Response (TIR) technique was standardized for Rice crop. 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. By adapting TIR technique 74 genotypes were screened for thermo tolerance.

Results: Out of 74 genotypes 14 exhibits thermo tolerance due to induced high temperature. This is also known by analyzing the informativeness of polymorphic markers by allele coding.

Conclusion:These genotypes have intrinsic heat tolerance and they can
be explored as donor source in breeding programme aimed for global warming.