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PJB-2020-114

Evaluation of plant growth promoting rhizobacteria (PGPR) for the control of charcoal rot of Mung bean

Amjid Khan, Shehzad Asad, Asghari Bano, Rashid Abbas Khan and Tauqeer Ahmed Qadri
DOI:10.30848/PJB2022-1(5)


Abstract

This research work was performed to evaluate the role of plant growth promoting rhizobacteria (PGPR) to control charcoal rot disease of Mung bean. The PGPR, Pseudomonas stutzeri and Pseudomonas putida were used to inoculate the seeds of two varieties of Mung cv. NM-11 and cv. Chakwal prior to sowing. The growth of fungus Macrophomina phaseolina (Causal agent of charcoal rot) was checked in dual culture assay in the presences of Pseudomonas stutzeri and Pseudomonas putida. The soil was infested with Macrophomina phaseolina spores before sowing the seeds. The experiment was conducted in pots under greenhouse condition. After 12 weeks of seed germination, nutrients content, disease and growth parameters were measured. Both the PGPR inhibited the growth of M. phaseolina and decreases the incidence of disease (DI), disease severity index (DSI) and disease mortality in both the varieties of Mung bean under stressed condition. There was maximum (53%) reduction in incidence of disease and (53%) disease severity index and (60%) disease mortality in cv. Chakwal was due to P. putida. Both the PGPR significantly enhanced all the growth parameters such as length of shoot and root and their weight. PGPR application, also alleviated M. phaseolina induced inhibition in nutrients content of leaves. P. putida being more effective than P. stutzeri in both the varieties of Mung bean and recommended for future use as biofungicides

To Cite this article: Khan, A., S. Asad, A. Bano, R.A. Khan and T.A. Qadri. 2022.  Evaluation of plant growth promoting rhizobacteria (PGPR) for the control of charcoal rot of Mung bean. Pak. J. Bot., 54(1): DOI: http://dx.doi.org/10.30848/PJB2022-1(5)
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