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Journal of Agricultural Science and Food Research
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Special Issue Article

Plant Growth Promoting Pseudomonas spp. from Diverse Agro-Ecosystems of India for Sorghum bicolor

Praveen Kumar G1*, Suseelendra Desai1, Leo Daniel Amalraj E1, Mir Hassan Ahmed SK1 and Gopal Reddy2

1Central Research Institute for Dry land Agriculture (ICAR), Santoshnagar, Hyderabad-500 059, India

2Department of Microbiology, Osmania University, Hyderabad- 500 007, India

*Corresponding Author:
Praveen Kumar G
Central Research Institute for Dryland Agriculture (ICAR)
Santoshnagar, Hyderabad-500059, India
Tel: +91-9849598248
E-mail: [email protected]

Received date: April 28, 2012; Accepted date: May 20, 2012; Published date: May 25, 2012

Citation: Praveen Kumar G, Desai S, Leo Daniel Amalraj E, Mir Hassan Ahmed SK, Reddy G (2012) Plant Growth Promoting Pseudomonas spp. from Diverse Agro-Ecosystems of India for Sorghum bicolor L. J Biofert Biopest S7:001. doi:10.4172/2155-6202.S7-001

Copyright: © 2012 Praveen Kumar G. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

 Fluorescent Pseudomonas spp. comprise an important group of rhizosphere bacterial community affecting plant growth. Sorghum is an important fifth largest cereal crop in world. 75 fluorescent Pseudomonas spp. were isolated from diverse agro-ecosystems of India and evaluated for their plant growth promoting ability initially by paper cup method. Fourteen selected isolates were further evaluated under glass house conditions. Plants inoculated with bacteria showed higher growth and nutrient uptake than controls. Seedlings treated with selected isolate P17 showed highest root volume (0.3 cm3 ), shoot length (36.2 cm), dry mass (152 mg), leaf area (31 cm2 ), chlorophyll (23 spad units), carbohydrates (30%), phosphorus (1.3%), nitrogen (2.2%) and other nutrients. Among the evaluated isolates Pseudomonas sp. P17 strain was identified as a potential PGPR for nutrient uptake and plant growth in sorghum. This finding has potential for integrated plant nutrient management in rainfed agroecosystems where farmers tend to rely on cost effective technologies for enhanced profitability

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