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Crop Research

Response of rice varieties (Oryza sativa L.)  to elevated temperature under aerobic conditions


DOI: 10.31830/2454-1761.2025.CR-1060    | Article Id: CR-1060 | Page : 273-279
Citation :- Response of rice varieties (Oryza sativa L.) to elevated temperature under aerobic conditions. Crop Res. 60: 273-279
SARAVANA KUMAR MURUGESAN, RAMADASS SIVALINGAM, RAJESHKUMAR ARUMUGAM, RAJASEKAR MANIVELU, KANNAN DURAI AND NAVEENKUMAR RADHAKRISHNAN ramadass@srmist.edu.in
Address : SRM College of Agricultural Sciences, SRM Institute of Science and Technology Baburayanpettai, Chengalpattu – 603201, Tamil Nadu, India
Submitted Date : 18-08-2025
Accepted Date : 14-10-2025
Online Published:

Abstract

Increasing atmospheric temperature is the consequence of global warming, which is anticipated to have an impact on crop growth and development and decrease the productivity of crops in tropical regions. A comprehensive evaluation of rice's sensitivity to elevated temperatures is necessary for identifying temperature-tolerant rice varieties with higher production to meet future demand for the world's expanding human population. A pot culture experiment was conducted during the summer season (January - April) of 2023 at SRM College of Agricultural Sciences, SRM Institute of Science and Technology, Baburayanpettai, Chengalpattu, to study the response of different rice varieties to elevated temperatures (2-3°C) at different growth stages under aerobic conditions. Four rice varieties, including Kanchana, Jyothi, Uma and Aishwarya, were selected and elevated temperature (2-3 °C above ambient) was imposed at different stages, viz., tillering to panicle initiation stage, panicle initiation to flowering stage, flowering to maturity stage, along with Control. A Completely Randomised Block Design was adopted with three replications. Significant variation in plant height, number of tillers, leaf area, days to flowering, dry matter production and grain yield was observed among the varieties. The variety Aiswarya recorded higher plant height (107.25 cm), number of tillers (11.70), leaf area (1662 cm2), dry matter production (35 g/hill), and grain (14.22 g/hill) under elevated temperature. The variety Aiswarya plays an important role in sustaining rice productivity under climate change conditions.
 

Keywords

Aerobic rice elevated temperature growth physiology yield

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