Vol. 11, Issue 10 (2022)

Author(s):
Mayanker Singh, Kushwaha SP, Shikha Shahi and Abhishek Pati Tiwari

Abstract:
The present study entitled “Effect of plant growth regulators on growth and physiological parameters of wheat (Triticum aestivum L.) Under late sown condition” has been taken to focus the involvement and potential role of plant growth regulator and was carried out in during 2019-20 and 2020-21 at Agronomy Research Farm of C.S.A. University of Agriculture and Technology, Kanpur (U.P.). The experiment was done during Rabi (2019-20 and 2020-21) using wheat variety K-9423 using randomized block design having eleven treatments and three replications having thirty-three plots different plant growth regulators are used at various growth stages for overall development of crop. The details of the following treatments used for two years of experimentation is as follows T₁: Control, T₂: IAA, 25 ppm T₃: IAA, 50 ppm T₄: Abscisic acid 10 ppm, T₅: Abscisic acid 20 ppm, T₆: TRIA 5 ppm, T₇: TRIA 10 ppm, T₈: Brassinosteroid 5 ppm, T₉: Brassinosteroid 10 ppm, T₁₀: Cytokinin 5 ppm, T₁₁: Cytokinin 10 ppm. Foliar spraying at two stages - first at 30 DAS (Vegetative stage) and second at anthesis in uniform dose of all treatments. The maximum Relative water content (RWC) (%) at heading stage in wheat was noted in T₃ with application of IAA 50 ppm which was significantly superior over T₁₁ and was statistically at par with T₂ IAA 25 ppm and T₁₀ Cytokinin 5ppm. Minimum Relative water content (RWC) (%) at heading stage was observed under T₅ Abscisic acid 20 ppm during both the years of investigation. The maximum Protein content in grain (%) in wheat was found in T₃ with application of IAA 50 ppm which was significantly superior over T₁₁ and was statistically at par with T₂ IAA 25 ppm and T₁₀ Cytokinin 5 ppm. Least Protein content in grain (%) was observed under T₅ Abscisic acid 20 ppm during both the years of investigation.