Evaluation of Iron Tolerance in Indigenous Rice (Oryza sativa L.) Genotypes of Eastern Himalaya Region

Author: Chamin Chimyang, E.V. Divakar Sastry, Dawa Dolma Bhutia and N. Anthony Baite

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Abstract

In regions characterized by high rainfall, iron toxicity presents a significant challenge to rice cultivation, impacting crop health and productivity. This study conducted in College of Agriculture, Central Agricultural University, Imphal, focuses on assessing the iron toxicity tolerance of 17 rice genotypes, aiming to identify cultivars suitable for cultivation under iron toxicity. Five levels of iron (0, 300, 600, 900 and 1200 mg/L Fe2+) were tested through controlled experimentation, simulating conditions typical of iron toxicity, the genotypes were evaluated for their response to varying levels of Fe2+. Results reveal substantial genotype-specific variations in iron toxicity tolerance, with certain cultivars exhibiting resilience to elevated iron levels while others demonstrate increased susceptibility

Keywords

Fe2+ toxicity, Rice genotypes, tolerance

Conclusion

Based on the findings of the experiment, It was observed that genotypes such as Local basmati, Pasighat, Damda Aamo, Gaksum showed tolerance to varied levels of iron stress while Chasa upland, Lailo, Simoi and Twisa showed susceptibility towards increased levels of iron stress. The experiment also showed that upland rice genotypes are sensitive to iron toxicity as compared to lowland rice genotypes. The experiment can be conducted in field also for further confirmation and to check yield of the crop

References

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How to cite this article

Chamin Chimyang, E.V. Divakar Sastry, Dawa Dolma Bhutia and N. Anthony Baite (2024). Evaluation of Iron Tolerance in Indigenous Rice (Oryza sativa L.) Genotypes of Eastern Himalaya Region. Biological Forum – An International Journal, 16(4): 96-100.