~ 711 ~ The Pharma Innovation Journal 2023; 12(2): 711-715 ISSN (E): 2277-7695 ISSN (P): 2349-8242 NAAS Rating: 5.23 TPI 2023; 12(2): 711-715 © 2023 TPI www.thepharmajournal.com Received: 02-12-2022 Accepted: 06-01-2023 Ram Niwas Choudhary Assistant Research Scientist, Agricultural Research Station, A.A.U. Dhandhuka, Ahmedabad, Gujarat, India Kinjal J Suthar Assistant Research Scientist, Agricultural Research Station, A. A.U. Dhandhuka, Ahmedabad, Gujarat, India NJ Patel Associate Professor, Bio- Chemistry, BACA, Anand, Gujarat, India Corresponding Author: Ram Niwas Choudhary Assistant Research Scientist, Agricultural Research Station, A.A.U. Dhandhuka, Ahmedabad, Gujarat, India Effect of chemicals and PGRs on quality parameters of durum wheat under rainfed conditions of Bhal region of Gujarat Ram Niwas Choudhary, Kinjal J Suthar, and NJ Patel DOI: https://doi.org/10.22271/tpi.2023.v12.i2i.18500 Abstract Drought is the most limiting factor for production in semi-arid ecosystem of Gujarat. Under changed climate scenario due to variability in rain fall pattern problem of drought aggravated. In order to investigate the effect of foliar spray of different chemicals and PGRs o no durum wheat under conserved moisture condition at Agricultural Research Station, AAU, Dhandhuka, Bhal tract of Gujarat in rabi season cultivation 2014-15 to 2016-17. The experiment was carried out in randomized block with eight treatments in three replications viz; T0 = Control, T1 = Water spray, T2 = Salicylic acid (100 ppm), T3 = Thioglicolic acid (100 ppm), T4 = Murate of potash (0.5%), T5 = Calcium nitrate (0.2%), T6 = Brassinolide (5 ppm), T7 = NAA (40 ppm), T8 = Thiourea (500 ppm) with absolute control (T0 = Control) and spray wad made at two stages of crop first on tillering stage and ear emergence and two sampling was done and each sampling were collect for biochemical analysis 10 days after each spray (tillering stage & ear emergence) of chemicals & PGRs to crop. Among the treatments imposed, result revealed that total chlorophyll content mg/fresh weight, Relative water content (RWC), antioxidant activates gm/100 mg, proline content mg/100 gm, glycine betaene mg/100 gm and protein content gm/100 mg was found significantly higher with T8 treatment (Thiourea 500 ppm) over the control and treatment no 6 (Brassinolide (5 ppm) was fond at par with T8 treatment in first sampling. whereas in second sampling significantly higher data of total chlorophyll content mg/fresh weight (3.358), moisture % (72.156) RWC % (81.71) AOA gm/100 mg (2.271), proline content mg/100 gm (32.96), glycine betaene mg/100 gm (232.86) and protein content gm/100 mg (6.937) was found with T8 (Thiourea 500 ppm) treatment over control. Keywords: Wheat, proline content TGA, Brassinolide, salicylic acid and thiourea Introduction Durum wheat (Triticum durum L.) is the second most important species globally as well as nationally grown after bread wheat (Triticum aestivum L.). In fact durum wheat was the predominantly grown in Central India, particularly in the Malwa region in Madhya Pradesh, Bhal and coastal agro-climatic zone in Gujarat, Southern Rajasthan and Bundelkhand region of Uttar Pradesh. Total durum wheat production in India is sharing about 4 to 10 percent of total wheat production. (Anon., 2017) [1] . Due to climate change heat stress at maturity stage becomes a regular phenomenon in recent years and drought is the most limiting factor in production in semi arid ecosystem of Gujarat. Under changed climate scenario due to variability in rainfall pattern problem of drought aggravated. Primarily the failure, prolonged dry spells and erratic behavior of south – west monsoon are the major cause of drought. Besides moisture stress, heat stress is also a very important factor that affects the agricultural production worldwide due to climate change (Hall, 2011) [4] . Bio-regulatoris a group of naturally occurring growth promoting phytohormones, which regulates several physiological processes like cell division, cell elongation, and synthesis of nucleic acid and proteins. Use of bio-regulators has offered new avenues for enhancing productivity of several crops. Partitioning of dry matter to yield storage organs is considered to be a major determinant for agricultural yield and this is dependent on the efficiency of photosynthate translocation in crop during grain filling period when developing grains are the storing sink. It has been reported that bio-regulators plays important role in greater partitioning of photosynthates towards reproductive sink there be improving the harvest index (Kumar et al. 2018) [7] . Thiourea, is thiocarbamide, an organic compound that resembles urea but contains sulphur instead of oxygen; i.e., the molecular formula is CS (NH 2 ) 2