Exploring the Impact of Plant Growth Regulators on Growth and Physiological Responses in Hybrid Rice Cultivation

Author: Shikha Shahi, P. K. Singh, S.P. Kushwaha, Mayanker Singh and Bipin Kumar Chaudhary

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Abstract

Plant growth regulators are artificial synthetic agents used for promoting or inhibiting growth, biochemical changes, phenology, quality characters and other plant physiological processes. The present study was performed at Student Instructional Farm of C. S. Azad University of Agriculture & Technology, Kanpur to evaluate the Aftermath of plant growth regulator’s foliar application on growth and Physiological characters of Rice. The experiment was conducted in randomized block design, with treatments consisting of foliar spray with IAA (25 & 50ppm), IBA (25 & 50ppm), NAA (25 & 50ppm), Ascorbic Acid (50 & 100ppm) and Kinetin (5 & 10ppm). The effect of foliar application of different concentration of plant growth regulators on Growth and physiological characters in rice were observed at tillering, anthesis, dough and at maturity stage. Growth parameters like plant height, number of tillers and leaf traits namely Total Leaf Area and Chlorophyll intensity recorded significant enhancement by the foliar application of IAA @ 50ppm. Significantly higher chlorophyll intensity in leaves were estimated at anthesis stage with the foliar spray of IAA @ 50ppm and followed by IAA @ 25ppm. Various traits of plant growth and physiology were altered under the application of Indole-3-acetic acid (i.e., Plant height, number of tillers plant-1, total leaf area plant-1 and chlorophyll intensity in leaves). According to above outcome of the experiment, it can be concluded that the foliar application of Indole Acetic Acid (IAA) is one of the most promising growth promoting hormones and it will definitely play significant role to change growth and physiological character in hybrid rice.

Keywords

Plant growth regulators, hybrid rice, growth, Physiological character

Conclusion

The application of IAA at a concentration of 50 ppm via foliar method exhibited remarkable effects on enhancing plant stature, increasing the number of tillers, expanding the overall leaf expanse, and intensifying chlorophyll content in hybrid plants. Notably, IAA at 25 ppm also demonstrated substantial benefits in these aspects. To summarize, our discoveries underscore the pivotal role of IAA in orchestrating root growth and bolstering detoxification mechanisms in rice plants. Plant hormones assume a crucial function in governing plant reactions to various growth-related and physiological metrics.

References

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How to cite this article

Shikha Shahi, P. K. Singh, S.P. Kushwaha, Mayanker Singh and Bipin Kumar Chaudhary (2023). Exploring the Impact of Plant Growth Regulators on Growth and Physiological Responses in Hybrid Rice Cultivation. Biological Forum – An International Journal, 15(9): 429-433.