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Researcher Sapna
Advisor Sharma, K. D.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher CCSHAU
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology ♦ Physiology & related subjects
Subject Keyword Drought ♦ Mungbean ♦ Plant Water Relations ♦ Rhizobial Strains ♦ Plant Physiology ♦ Evaluation of Rhizobial Isolates For Physiological Responses In Mungbean (vigna Radiata L. Wilczek) Under Rainfed Conditions
Abstract The study entitled, “Evaluation of rhizobial isolates for physiological responses in mungbean (Vigna radiata L. wilczek) under rainfed conditions†was conducted during kharif season of 2016 at drought plots of Crop Physiology field area, Department of Agronomy, CCS Haryana Agricultural University, Hisar. The experiment was laid out in factorial RBD consisting of two irrigation levels, i.e., rainfed (no post sowing irrigation) and two irrigations one each at pre-flowering and pod formation stage and four rhizobial isolates i.e. Recommended dose of fertilizer (RDF), RDF + Rhizobium sp. (Vigna) 703 + PSB strain P-36, RDF + MR 63, RDF + MR 54, RDF + MB 17a and RDF + MH 8b2 with three replications. Drought stress decreased the growth of mungbean in terms of plant height, dry matter accumulation and nodule number. However, treatment with rhizobial isolates increased the growth parameters under drought stress. All the plant water status parameters such as leaf water potential, RWC and CTD decreased under drought stress. Application of rhizobial treatments improved the plant water status under both environments. Gaseous exchange studies mainly rate of photosynthesis; transpiration and stomatal conductance get reduced under drought stress. Rhizobial treatments were more effective to brought consecutive improvement in gaseous exchange under drought. Membrane injury and canopy temperature enhanced under drought stress but rhizobial inoculation increased the membrane stability and decreased the canopy temperature. Biochemical metabolite such as chlorophyll, MSI (%) and leghaemoglobin declined under drought stress. Rhizobial treatments improved all the above biochemical metabolites. The nutrient composition i.e. nitrogen and phosphorus decreased in seed and straw under drought stress. Seed and biological yield reduced significantly due to decreased number of pods, number of branches and test weight under drought stress. Rhizobial treatment improved the yield and its attributes by maintaining plants water status and various physiological and biochemical processes. Rhizobial isolates MR 63 and MB 17a proved to be relatively more effective over other rhizobial strains under drought in mungbean.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Size (in Bytes) 1.43 MB