In the present investigation, a field experiment with nine treatments and three replications of each treatments was conducted with Randomized Block Design (RBD to explore effect of exogenously applied plant growth regulators on yield and quality traits of wheat crop. Wheat plants were sprayed with growth regulators at tillering and before anthesis stage, which were not only increase in the yield but also improve the quality components. The treatments were; Indole 3 Acetic Acid (IAA) 25 ppm and 50 ppm, Gibberellins (GA3) 20 ppm and 40 ppm, Cytokinin (Kinetin) 5 ppm and 10 ppm, Alar 1000 ppm and 2000 ppm. Results showed a conspicuous improvement in yield and quality traits of plant growth regulator treated plants. The yield traits such as number of ears plant -1 , length of ear (cm), number of grains ear -1 , grain yield plant -1 , test weight and Harvest Index (HI) were found to be higher in IAA 50ppm treatment. Maximum protein content (%) was observed under the treatment of Kinetin 5 ppm. All the parameters were significantly influenced by plant growth regulators in respect to control.
Growth regulators is a chemical compound, which is either synthesized by the plants or exogenously applied. It affects the growth and metabolic rate thus affecting the yield and quality ofcrop. In this investigation, the Basmati rice plants were foliar sprayed with growth regulators (IAA, Kinetin, CCC, SADH and Ascorbic Acid) at tillering and before anthesis stage. Results showed a conspicuous increase in yield and quality traits in treated plants. The yield attributing traits like grain weight per plant,straw weight/plant, 1000 grain weight/test weight and Harvest Index (HI) was improved by the treatment of IAA. The quality trait viz. Grain Starch and Uncoocked and cooked grain size were significantly improved by IAA, while Grain Protein content was by Kinetin.
A field study was conducted to evaluate the “Effect of plant growth regulators on biochemical parameters of mustard [Brassica juncea (L.) Czern & Coss.] under sodic soil.” An experiment was laid out in randomized block design with seven treatments and three replications. The field experiment treatments consist of foliar spray with GA3 (50ppm, 100ppm, 150ppm) and salicylic acid (100ppm, 200ppm, 300ppm) were prepared on weight by volume basis as per desired concentration. Data confined to physiological changes like chlorophyll content, catalase activity were recorded at 40, 60 and 80 DAS. Oil content (%) in mature seeds was recorded at maturity. Significantly higher chlorophyll contents and catalase activity in leaves were estimated with the foliar spray of 100 ppm GA3 (2.51, 5.05, 2.24) chlorophyll content mg g-1 fresh weight and (69.17, 173.80, 171.30) catalase activity EU mg-1 protein min-1 and Significantly higher oil content (%) in mature seeds of mustard were estimated with the foliar application of 100 ppm GA3 (40.67 %) as compared to control. These biochemical parameters superior with foliar application of GA3 100ppm followed by Salicylic acid 200ppm.
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