Molecular diversity of rhizobial isolates of horse gram [MACROTYLOMA UNIFLORUM [Lam] Verdc.] and it’s biochemical characterization under in-vitro conditions

DOI: 10.18805/lr.v0iOF.9387    | Article Id: LR-3514 | Page : 87-93
Citation :- Molecular diversity of rhizobial isolates of horse gram [MACROTYLOMA UNIFLORUM [Lam] Verdc.] and it’s biochemical characterizationunder in-vitro conditions .Legume Research.2017.(40):87-93

B.K. Mishra*, P.N. Dubey and K. Kant

Address :

ICAR-NRC on Seed Spices, Tabiji, Ajmer-305 206, India.

Submitted Date : 4-05-2015
Accepted Date : 10-12-2015


The present research was conducted to isolate and characterize native rhizobium isolates from the root nodules of horse gram [MACROTYLOMA UNIFLORUM [Lam] Verdc.] plants grown under sub-humid to semi-arid regions of Rajasthan in India. These plants were collected from various locations of Rajasthan viz; Banswara, Bhilwara, Pratapgarh and Udaipur districts in India under variable agro-climatic regions. Total nine rhizobial isolates were characterized based on morphological and biochemical analysis. Majority of the isolates showed pH, NaCl concentration and temperature tolerance between 6.0to 8.0, 0.5 to 3.0 per cent and 34 to 40 0C respectively. The horse gram rhizobium isolate R5 showed tolerant towards temperature and NaCl concentration upto 450C and 5% respectively whereas the isolate R3 showed positive growth upto alkaline pH of 10.0. The molecular characterization based on RAPD  revealed that rhizobium isolates are closely related to each other as only two major clusters was formed based on Jaccards, s similarity coefficient.


Abiotic stress tolerance Horse gram Molecular characterization Rhizobium.


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