01 Dec Application of Plant Growth Promoting Rhizobacteria (PGPR) for enhanced crop growth
अधिक फसल वृद्धि के लिए प्लांट ग्रोथ को बढ़ावा देनेे वाले राइज़ोबैक्टेरिया (पीजीपीआर) का उपयोग Soil harbors several beneficial microorganisms and some of them colonize in the rhizospheric zone and enhance plant growth. Such bacteria are generally designated as PGPR (Plant Growth-Promoting Rhizobacteria). Plant growth-promoting rhizobacteria (PGPR) was first defined by Kloepper and Schrot to describe soil bacteria that colonize the roots of plants following inoculation onto seed and that enhance plant growth. Forms of Plant Growth Promoting Rhizobacterial (पौधे का विकास बढाने वाले राईजोबैट्रीयल के रूप ) Plant growth promoting rhizobacteria can be classified into extracellular plant growth promoting rhizobacteria (ePGPR) and intracellular plant growth promoting rhizobacteria (iPGPR). The ePGPRs may exist in the rhizosphere, on the rhizoplane or in the spaces between the cells of root cortex while iPGPRs locates generally inside the specialized nodular structures of root cells. The bacterial genera such as Agrobacterium, Arthrobacter, Azotobacter, Azospirillum, Bacillus, Burkholderia, Caulobacter, Chromobacterium, Flavobacterium, Micrococcous, Pseudomonas and Serratia belongs to ePGPR. The iPGPR belongs to the family of Rhizobiaceae includes Allorhizobium, Bradyrhizobium, Mesorhizobium and Rhizobium, endophytes and Frankia species both of which can symbiotically fix atmospheric nitrogen with the higher plants. Mechanism Employed by PGPRs in Plant Growth Promotion: (राईजोबैक्ट्रीया से पौधे के विकास की क्रियाविधि) Plant growth promotion by plant growth promoting rhizobacteria is a well-known phenomenon and this growth enhancement is due...