Bioscience Discovery, Volume 10, Number 3, Page Number 122-125, Month & Year: July - 2019

Diversity of cyanobacteria in the cultivated fields of Ahmednagar districts (M.S.) India

Swati G. Wagh and Milind J. Jadhav*

Department of Botany, Shri.  Baneshwar Arts, Commerce and Science College, Burhannagar, Tal. & Dist. – Ahmednagar, Pin code- 414002. (M.S.) India.
*Department of Botany, Sir Sayyad College, Roshan Gate area, Aurangabad, Pin code-   413001.   (M.S.) India. 
*Email- [email protected]

Article Info		Abstract
Received: 02-05-2019, Revised: 22-06-2019, Accepted: 28-06-2019		Cyanobacteria is an important group of soil. Ecologically they are significant and plays a crucial role in fertility of soil. Cyanobacteria fixes atmospheric nitrogen and increases fertility of soil. Majority of the species of cyanobacteria helps in retention of soil moisture and provides germination ground for seeds of flowering plants. The cultivated field ecosystem provides a favourable environment for the growth and development of cyanobacteria. In order to study diversity of cyanobacteria of cultivated fields, sugarcane and onion fields from Ahmednagar district of Maharashtra were selected. The work was carried out from October 2015 to September 2016. Cyanobacterial samples were collected at regular intervals froms moist soil surface of selected cultivated fields. A total of 29 species under 12 genera were identified and recorded. Maximum number of cyanobacterial forms were recorded from sugarcane field. Taxa of Aphanothece, Oscillatoria, Phormidium, Microcoleus and Plectonema were found dominant. Aphanothece nidulants, Oscillatoria acuminata, Phormidium jenkelianum, Phormidium molle, Phormidium usterii, Lyngbya hieronysmusii, Microcoleus acutissimus, Microcoleus lacustris, and Microcoleus subtorulosus were recorded in both the fields. Physicochemical analysis of soil of selected cultivated fields was also performed by selecting certain physicochemical parameters such as pH, electrical conductivity, organic carbon, available nitrogen, available phosphorus and available potassium. A positive correlation among composition of cyanobacterial flora and physicochemical analysis of soil were observed.
Keywords: Cyanobacteria, diversity, soil, physicochemical analysis

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