Vol. 10, Issue 12 (2021)

Author(s):
Bharathi Ayyenar, Veera Ranjani Rajagopalan, Rohit Kambale and Raveendran Muthurajan

Abstract:
Rice production is influenced by temperature since it affects both pollination and grain quality. Starch granule compaction, which influences rice grain recovery during milling and polishing, is affected by high temperatures during the fertilizations and also post-fertilization phase. Reduced head rice recovery has an impact on farmers by lowering milled grain revenues. To meet consumer and market demands, the most important goal is to improve grain quality. As a result, rice breeders all over the world are concentrating their efforts on generating rice varieties with desirable milling and appearance characteristics. The goal of this study was to determine the high temperature-induced damage to head rice recovery in rice using different accessions and to estimate the variability present in the collections that can be used as donors for the grain quality improvement. The maximum temperature during wet season 2016 was observed as 30.3 °C and during dry season 2017 it was observed as 33.7 °C. The HRR % ranged from 11.6 - 87.2 during wet season 2016 and 2.2 - 83.4 during dry season 2017. The variability parameters PCV, GCV, heritability, and GAM indicated greater values for head rice recovery %.