ABSTRACT

Background: Cyanobacteria also known as blue green algae are well known photosynthetic autotrophic prokaryotes. Cyanobacteria is a preferable alternative to chemical fertilisers for increasing soil productivity. Methods: For the current study the cyanobacterial samples were isolated from various paddy fields from Nasik District. PGPR activity of isolated cyanobacterial strains was determined viz. production of indole acetic acid, siderophores, nitrogen fixation and solubilization of various metals like potassium, phosphate, calcium, magnesium, sulphur, zinc and manganese. The seed germination and pot culture studies of the isolated cyanobacterial strain Gloeocapsa-1 showed a high rate of germination in terms of root and shoot length. Results: Out of 6 different cyanobacterial spp., Gleocapsa was selected. The strain 1 labelled gleocapsa showed higher PGPR activity which was determined by production ofindole acetic acid, siderophores, nitrogen fixation and Metal solubilization. The significant effect of cyanobacterial extracts on the growth of shoot length and root length was determined by Single factor ANOVA at 0.05 level of significant difference. Keywords: Blue green algae, Cyanobacteria, Gloeocapsa, Indole acetic acid, PGPR activity, Siderophore
Publication date: 15/12/2021

https://ijbpas.com/pdf/2021/December/MS_IJBPAS_2021_DEC_SPCL_1035.pdf

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https://doi.org/10.31032/IJBPAS/2021/10.12.1035